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Finding the Fourth Proportional to 487,699.17, 731,611.05 and 188,265.36

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Solution

The fourth proportional to 487,699.17, 731,611.05 and 188,265.36 is: 282,422.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,699.17 : 731,611.05 = 188,265.36 : x
  2. Step 2: Convert to fraction form
    487,699.17/731,611.05 = 188,265.36/x
  3. Step 3: Cross multiply
    487,699.17x = 731,611.05 × 188,265.36
  4. Step 4: Simplify right side
    487,699.17x = 137,737,017,708.23
  5. Step 5: Solve for x
    x = 137,737,017,708.23/487,699.17
  6. Step 6: Final answer
    x = 282,422.09

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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.