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Finding the Fourth Proportional to 415,790.80, 623,686.20 and 149,592.40

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Solution

The fourth proportional to 415,790.80, 623,686.20 and 149,592.40 is: 224,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,790.80 : 623,686.20 = 149,592.40 : x
  2. Step 2: Convert to fraction form
    415,790.80/623,686.20 = 149,592.40/x
  3. Step 3: Cross multiply
    415,790.80x = 623,686.20 × 149,592.40
  4. Step 4: Simplify right side
    415,790.80x = 93,298,715,504.88
  5. Step 5: Solve for x
    x = 93,298,715,504.88/415,790.80
  6. Step 6: Final answer
    x = 224,388.60

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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.