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Finding the Fourth Proportional to 498,909.22, 688,290.84 and 368,399.60

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Solution

The fourth proportional to 498,909.22, 688,290.84 and 368,399.60 is: 508,240.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,909.22 : 688,290.84 = 368,399.60 : x
  2. Step 2: Convert to fraction form
    498,909.22/688,290.84 = 368,399.60/x
  3. Step 3: Cross multiply
    498,909.22x = 688,290.84 × 368,399.60
  4. Step 4: Simplify right side
    498,909.22x = 253,566,070,139.66
  5. Step 5: Solve for x
    x = 253,566,070,139.66/498,909.22
  6. Step 6: Final answer
    x = 508,240.90

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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.