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Finding the Fourth Proportional to 257,502.90, 386,363.70 and 124,314.60

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Solution

The fourth proportional to 257,502.90, 386,363.70 and 124,314.60 is: 186,524.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,502.90 : 386,363.70 = 124,314.60 : x
  2. Step 2: Convert to fraction form
    257,502.90/386,363.70 = 124,314.60/x
  3. Step 3: Cross multiply
    257,502.90x = 386,363.70 × 124,314.60
  4. Step 4: Simplify right side
    257,502.90x = 48,030,648,820.02
  5. Step 5: Solve for x
    x = 48,030,648,820.02/257,502.90
  6. Step 6: Final answer
    x = 186,524.69

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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.