Home / 391,562,156,319.52-540,355,801,705.65-217,943,569,828.29

Finding the Fourth Proportional to 391,562,156,319.52, 540,355,801,705.65 and 217,943,569,828.29

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Solution

The fourth proportional to 391,562,156,319.52, 540,355,801,705.65 and 217,943,569,828.29 is: 300,762,140,826.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,562,156,319.52 : 540,355,801,705.65 = 217,943,569,828.29 : x
  2. Step 2: Convert to fraction form
    391,562,156,319.52/540,355,801,705.65 = 217,943,569,828.29/x
  3. Step 3: Cross multiply
    391,562,156,319.52x = 540,355,801,705.65 × 217,943,569,828.29
  4. Step 4: Simplify right side
    391,562,156,319.52x = 117,767,072,401,156,965,662,720
  5. Step 5: Solve for x
    x = 117,767,072,401,156,965,662,720/391,562,156,319.52
  6. Step 6: Final answer
    x = 300,762,140,826.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.