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Finding the Fourth Proportional to 257,952.08, 386,850.36 and 91,730

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Solution

The fourth proportional to 257,952.08, 386,850.36 and 91,730 is: 137,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,952.08 : 386,850.36 = 91,730 : x
  2. Step 2: Convert to fraction form
    257,952.08/386,850.36 = 91,730/x
  3. Step 3: Cross multiply
    257,952.08x = 386,850.36 × 91,730
  4. Step 4: Simplify right side
    257,952.08x = 35,485,783,522.80
  5. Step 5: Solve for x
    x = 35,485,783,522.80/257,952.08
  6. Step 6: Final answer
    x = 137,567.35

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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.