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Finding the Fourth Proportional to 457,613.28, 631,568.16 and 266,686.56

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Solution

The fourth proportional to 457,613.28, 631,568.16 and 266,686.56 is: 368,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,613.28 : 631,568.16 = 266,686.56 : x
  2. Step 2: Convert to fraction form
    457,613.28/631,568.16 = 266,686.56/x
  3. Step 3: Cross multiply
    457,613.28x = 631,568.16 × 266,686.56
  4. Step 4: Simplify right side
    457,613.28x = 168,430,739,995.93
  5. Step 5: Solve for x
    x = 168,430,739,995.93/457,613.28
  6. Step 6: Final answer
    x = 368,063.49

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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.