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Finding the Fourth Proportional to 257,831.80, 386,844.90 and 124,829.80

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Solution

The fourth proportional to 257,831.80, 386,844.90 and 124,829.80 is: 187,291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,831.80 : 386,844.90 = 124,829.80 : x
  2. Step 2: Convert to fraction form
    257,831.80/386,844.90 = 124,829.80/x
  3. Step 3: Cross multiply
    257,831.80x = 386,844.90 × 124,829.80
  4. Step 4: Simplify right side
    257,831.80x = 48,289,771,498.02
  5. Step 5: Solve for x
    x = 48,289,771,498.02/257,831.80
  6. Step 6: Final answer
    x = 187,291.76

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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.