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Finding the Fourth Proportional to 385,321.60, 531,760.08 and 238,179.16

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Solution

The fourth proportional to 385,321.60, 531,760.08 and 238,179.16 is: 328,697.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,321.60 : 531,760.08 = 238,179.16 : x
  2. Step 2: Convert to fraction form
    385,321.60/531,760.08 = 238,179.16/x
  3. Step 3: Cross multiply
    385,321.60x = 531,760.08 × 238,179.16
  4. Step 4: Simplify right side
    385,321.60x = 126,654,169,175.93
  5. Step 5: Solve for x
    x = 126,654,169,175.93/385,321.60
  6. Step 6: Final answer
    x = 328,697.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.