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Finding the Fourth Proportional to 658,487.96, 987,053.96 and 258,966.80

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Solution

The fourth proportional to 658,487.96, 987,053.96 and 258,966.80 is: 388,183.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,487.96 : 987,053.96 = 258,966.80 : x
  2. Step 2: Convert to fraction form
    658,487.96/987,053.96 = 258,966.80/x
  3. Step 3: Cross multiply
    658,487.96x = 987,053.96 × 258,966.80
  4. Step 4: Simplify right side
    658,487.96x = 255,614,205,448.53
  5. Step 5: Solve for x
    x = 255,614,205,448.53/658,487.96
  6. Step 6: Final answer
    x = 388,183.57

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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.