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Finding the Fourth Proportional to 415,454.80, 623,182.20 and 149,256.40

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Solution

The fourth proportional to 415,454.80, 623,182.20 and 149,256.40 is: 223,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,454.80 : 623,182.20 = 149,256.40 : x
  2. Step 2: Convert to fraction form
    415,454.80/623,182.20 = 149,256.40/x
  3. Step 3: Cross multiply
    415,454.80x = 623,182.20 × 149,256.40
  4. Step 4: Simplify right side
    415,454.80x = 93,013,931,716.08
  5. Step 5: Solve for x
    x = 93,013,931,716.08/415,454.80
  6. Step 6: Final answer
    x = 223,884.60

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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.