Home / 417,428.12-626,091.16-177,638.61

Finding the Fourth Proportional to 417,428.12, 626,091.16 and 177,638.61

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Solution

The fourth proportional to 417,428.12, 626,091.16 and 177,638.61 is: 266,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,428.12 : 626,091.16 = 177,638.61 : x
  2. Step 2: Convert to fraction form
    417,428.12/626,091.16 = 177,638.61/x
  3. Step 3: Cross multiply
    417,428.12x = 626,091.16 × 177,638.61
  4. Step 4: Simplify right side
    417,428.12x = 111,217,962,951.59
  5. Step 5: Solve for x
    x = 111,217,962,951.59/417,428.12
  6. Step 6: Final answer
    x = 266,436.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.