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Finding the Fourth Proportional to 415,330.96, 573,405.72 and 272,340.40

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Solution

The fourth proportional to 415,330.96, 573,405.72 and 272,340.40 is: 375,993.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,330.96 : 573,405.72 = 272,340.40 : x
  2. Step 2: Convert to fraction form
    415,330.96/573,405.72 = 272,340.40/x
  3. Step 3: Cross multiply
    415,330.96x = 573,405.72 × 272,340.40
  4. Step 4: Simplify right side
    415,330.96x = 156,161,543,147.09
  5. Step 5: Solve for x
    x = 156,161,543,147.09/415,330.96
  6. Step 6: Final answer
    x = 375,993.02

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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.