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Finding the Fourth Proportional to 347,008.20, 520,512.30 and 157,395.30

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Solution

The fourth proportional to 347,008.20, 520,512.30 and 157,395.30 is: 236,092.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,008.20 : 520,512.30 = 157,395.30 : x
  2. Step 2: Convert to fraction form
    347,008.20/520,512.30 = 157,395.30/x
  3. Step 3: Cross multiply
    347,008.20x = 520,512.30 × 157,395.30
  4. Step 4: Simplify right side
    347,008.20x = 81,926,189,612.19
  5. Step 5: Solve for x
    x = 81,926,189,612.19/347,008.20
  6. Step 6: Final answer
    x = 236,092.95

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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.