Home / 390,142.35-585,545.76-153,651.15

Finding the Fourth Proportional to 390,142.35, 585,545.76 and 153,651.15

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Solution

The fourth proportional to 390,142.35, 585,545.76 and 153,651.15 is: 230,607.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,142.35 : 585,545.76 = 153,651.15 : x
  2. Step 2: Convert to fraction form
    390,142.35/585,545.76 = 153,651.15/x
  3. Step 3: Cross multiply
    390,142.35x = 585,545.76 × 153,651.15
  4. Step 4: Simplify right side
    390,142.35x = 89,969,779,401.62
  5. Step 5: Solve for x
    x = 89,969,779,401.62/390,142.35
  6. Step 6: Final answer
    x = 230,607.57

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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.