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Finding the Fourth Proportional to 580,005.19, 869,998.20 and 238,379.39

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Solution

The fourth proportional to 580,005.19, 869,998.20 and 238,379.39 is: 357,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,005.19 : 869,998.20 = 238,379.39 : x
  2. Step 2: Convert to fraction form
    580,005.19/869,998.20 = 238,379.39/x
  3. Step 3: Cross multiply
    580,005.19x = 869,998.20 × 238,379.39
  4. Step 4: Simplify right side
    580,005.19x = 207,389,640,217.10
  5. Step 5: Solve for x
    x = 207,389,640,217.10/580,005.19
  6. Step 6: Final answer
    x = 357,565.15

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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.