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Finding the Fourth Proportional to 474,420.60, 711,728.10 and 159,103.80

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Solution

The fourth proportional to 474,420.60, 711,728.10 and 159,103.80 is: 238,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,420.60 : 711,728.10 = 159,103.80 : x
  2. Step 2: Convert to fraction form
    474,420.60/711,728.10 = 159,103.80/x
  3. Step 3: Cross multiply
    474,420.60x = 711,728.10 × 159,103.80
  4. Step 4: Simplify right side
    474,420.60x = 113,238,645,276.78
  5. Step 5: Solve for x
    x = 113,238,645,276.78/474,420.60
  6. Step 6: Final answer
    x = 238,688.30

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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.