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Finding the Fourth Proportional to 266,627.20, 399,422.40 and 148,086.40

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Solution

The fourth proportional to 266,627.20, 399,422.40 and 148,086.40 is: 221,841.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,627.20 : 399,422.40 = 148,086.40 : x
  2. Step 2: Convert to fraction form
    266,627.20/399,422.40 = 148,086.40/x
  3. Step 3: Cross multiply
    266,627.20x = 399,422.40 × 148,086.40
  4. Step 4: Simplify right side
    266,627.20x = 59,149,025,295.36
  5. Step 5: Solve for x
    x = 59,149,025,295.36/266,627.20
  6. Step 6: Final answer
    x = 221,841.68

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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.