Home / 208,397.28-287,555.76-123,500.64

Finding the Fourth Proportional to 208,397.28, 287,555.76 and 123,500.64

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Solution

The fourth proportional to 208,397.28, 287,555.76 and 123,500.64 is: 170,411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,397.28 : 287,555.76 = 123,500.64 : x
  2. Step 2: Convert to fraction form
    208,397.28/287,555.76 = 123,500.64/x
  3. Step 3: Cross multiply
    208,397.28x = 287,555.76 × 123,500.64
  4. Step 4: Simplify right side
    208,397.28x = 35,513,320,395.69
  5. Step 5: Solve for x
    x = 35,513,320,395.69/208,397.28
  6. Step 6: Final answer
    x = 170,411.63

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1.5x scale

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.