Home / 391,562,156,302.98-540,355,801,682.78-217,943,569,811.76

Finding the Fourth Proportional to 391,562,156,302.98, 540,355,801,682.78 and 217,943,569,811.76

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Solution

The fourth proportional to 391,562,156,302.98, 540,355,801,682.78 and 217,943,569,811.76 is: 300,762,140,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,562,156,302.98 : 540,355,801,682.78 = 217,943,569,811.76 : x
  2. Step 2: Convert to fraction form
    391,562,156,302.98/540,355,801,682.78 = 217,943,569,811.76/x
  3. Step 3: Cross multiply
    391,562,156,302.98x = 540,355,801,682.78 × 217,943,569,811.76
  4. Step 4: Simplify right side
    391,562,156,302.98x = 117,767,072,387,240,516,648,960
  5. Step 5: Solve for x
    x = 117,767,072,387,240,516,648,960/391,562,156,302.98
  6. Step 6: Final answer
    x = 300,762,140,803.30

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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.