Home / 215,453,828.40-297,328,185.72-122,640,313.20

Finding the Fourth Proportional to 215,453,828.40, 297,328,185.72 and 122,640,313.20

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Solution

The fourth proportional to 215,453,828.40, 297,328,185.72 and 122,640,313.20 is: 169,244,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,453,828.40 : 297,328,185.72 = 122,640,313.20 : x
  2. Step 2: Convert to fraction form
    215,453,828.40/297,328,185.72 = 122,640,313.20/x
  3. Step 3: Cross multiply
    215,453,828.40x = 297,328,185.72 × 122,640,313.20
  4. Step 4: Simplify right side
    215,453,828.40x = 36,464,421,819,888,568
  5. Step 5: Solve for x
    x = 36,464,421,819,888,568/215,453,828.40
  6. Step 6: Final answer
    x = 169,244,715.17

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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.