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Finding the Fourth Proportional to 417,646.80, 626,470.20 and 207,694.80

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Solution

The fourth proportional to 417,646.80, 626,470.20 and 207,694.80 is: 311,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,646.80 : 626,470.20 = 207,694.80 : x
  2. Step 2: Convert to fraction form
    417,646.80/626,470.20 = 207,694.80/x
  3. Step 3: Cross multiply
    417,646.80x = 626,470.20 × 207,694.80
  4. Step 4: Simplify right side
    417,646.80x = 130,114,602,894.96
  5. Step 5: Solve for x
    x = 130,114,602,894.96/417,646.80
  6. Step 6: Final answer
    x = 311,542.20

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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.