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Finding the Fourth Proportional to 318,625.52, 477,798.05 and 168,831.28

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Solution

The fourth proportional to 318,625.52, 477,798.05 and 168,831.28 is: 253,172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,625.52 : 477,798.05 = 168,831.28 : x
  2. Step 2: Convert to fraction form
    318,625.52/477,798.05 = 168,831.28/x
  3. Step 3: Cross multiply
    318,625.52x = 477,798.05 × 168,831.28
  4. Step 4: Simplify right side
    318,625.52x = 80,667,256,363.00
  5. Step 5: Solve for x
    x = 80,667,256,363.00/318,625.52
  6. Step 6: Final answer
    x = 253,172.62

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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.