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Finding the Fourth Proportional to 208,240.16, 287,371.80 and 112,747.76

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Solution

The fourth proportional to 208,240.16, 287,371.80 and 112,747.76 is: 155,592.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,240.16 : 287,371.80 = 112,747.76 : x
  2. Step 2: Convert to fraction form
    208,240.16/287,371.80 = 112,747.76/x
  3. Step 3: Cross multiply
    208,240.16x = 287,371.80 × 112,747.76
  4. Step 4: Simplify right side
    208,240.16x = 32,400,526,737.17
  5. Step 5: Solve for x
    x = 32,400,526,737.17/208,240.16
  6. Step 6: Final answer
    x = 155,592.11

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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.