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Finding the Fourth Proportional to 239,397.20, 359,630.40 and 200,031.20

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Solution

The fourth proportional to 239,397.20, 359,630.40 and 200,031.20 is: 300,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,397.20 : 359,630.40 = 200,031.20 : x
  2. Step 2: Convert to fraction form
    239,397.20/359,630.40 = 200,031.20/x
  3. Step 3: Cross multiply
    239,397.20x = 359,630.40 × 200,031.20
  4. Step 4: Simplify right side
    239,397.20x = 71,937,300,468.48
  5. Step 5: Solve for x
    x = 71,937,300,468.48/239,397.20
  6. Step 6: Final answer
    x = 300,493.49

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1.5x scale

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.