Home / 257,540.04-386,421.05-139,294.62

Finding the Fourth Proportional to 257,540.04, 386,421.05 and 139,294.62

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Solution

The fourth proportional to 257,540.04, 386,421.05 and 139,294.62 is: 209,001.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,540.04 : 386,421.05 = 139,294.62 : x
  2. Step 2: Convert to fraction form
    257,540.04/386,421.05 = 139,294.62/x
  3. Step 3: Cross multiply
    257,540.04x = 386,421.05 × 139,294.62
  4. Step 4: Simplify right side
    257,540.04x = 53,826,373,319.75
  5. Step 5: Solve for x
    x = 53,826,373,319.75/257,540.04
  6. Step 6: Final answer
    x = 209,001.96

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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.