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Finding the Fourth Proportional to 257,356.29, 386,046.74 and 124,348.42

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Solution

The fourth proportional to 257,356.29, 386,046.74 and 124,348.42 is: 186,528.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,356.29 : 386,046.74 = 124,348.42 : x
  2. Step 2: Convert to fraction form
    257,356.29/386,046.74 = 124,348.42/x
  3. Step 3: Cross multiply
    257,356.29x = 386,046.74 × 124,348.42
  4. Step 4: Simplify right side
    257,356.29x = 48,004,302,165.15
  5. Step 5: Solve for x
    x = 48,004,302,165.15/257,356.29
  6. Step 6: Final answer
    x = 186,528.58

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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.