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Finding the Fourth Proportional to 208,385.73, 287,572.28 and 112,892.40

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Solution

The fourth proportional to 208,385.73, 287,572.28 and 112,892.40 is: 155,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,385.73 : 287,572.28 = 112,892.40 : x
  2. Step 2: Convert to fraction form
    208,385.73/287,572.28 = 112,892.40/x
  3. Step 3: Cross multiply
    208,385.73x = 287,572.28 × 112,892.40
  4. Step 4: Simplify right side
    208,385.73x = 32,464,724,862.67
  5. Step 5: Solve for x
    x = 32,464,724,862.67/208,385.73
  6. Step 6: Final answer
    x = 155,791.50

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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.