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Finding the Fourth Proportional to 261,755.68, 392,545.22 and 99,611.24

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Solution

The fourth proportional to 261,755.68, 392,545.22 and 99,611.24 is: 149,383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,755.68 : 392,545.22 = 99,611.24 : x
  2. Step 2: Convert to fraction form
    261,755.68/392,545.22 = 99,611.24/x
  3. Step 3: Cross multiply
    261,755.68x = 392,545.22 × 99,611.24
  4. Step 4: Simplify right side
    261,755.68x = 39,101,916,603.58
  5. Step 5: Solve for x
    x = 39,101,916,603.58/261,755.68
  6. Step 6: Final answer
    x = 149,383.26

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1.5x scale

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.