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Finding the Fourth Proportional to 486,478.32, 729,681.48 and 170,938.32

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Solution

The fourth proportional to 486,478.32, 729,681.48 and 170,938.32 is: 256,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,478.32 : 729,681.48 = 170,938.32 : x
  2. Step 2: Convert to fraction form
    486,478.32/729,681.48 = 170,938.32/x
  3. Step 3: Cross multiply
    486,478.32x = 729,681.48 × 170,938.32
  4. Step 4: Simplify right side
    486,478.32x = 124,730,526,326.31
  5. Step 5: Solve for x
    x = 124,730,526,326.31/486,478.32
  6. Step 6: Final answer
    x = 256,394.83

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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.