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Finding the Fourth Proportional to 415,586.80, 623,380.20 and 166,447.60

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Solution

The fourth proportional to 415,586.80, 623,380.20 and 166,447.60 is: 249,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,586.80 : 623,380.20 = 166,447.60 : x
  2. Step 2: Convert to fraction form
    415,586.80/623,380.20 = 166,447.60/x
  3. Step 3: Cross multiply
    415,586.80x = 623,380.20 × 166,447.60
  4. Step 4: Simplify right side
    415,586.80x = 103,760,138,177.52
  5. Step 5: Solve for x
    x = 103,760,138,177.52/415,586.80
  6. Step 6: Final answer
    x = 249,671.40

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Similar ratio
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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.