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Finding the Fourth Proportional to 457,840.52, 631,856.40 and 253,911.68

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Solution

The fourth proportional to 457,840.52, 631,856.40 and 253,911.68 is: 350,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,840.52 : 631,856.40 = 253,911.68 : x
  2. Step 2: Convert to fraction form
    457,840.52/631,856.40 = 253,911.68/x
  3. Step 3: Cross multiply
    457,840.52x = 631,856.40 × 253,911.68
  4. Step 4: Simplify right side
    457,840.52x = 160,435,720,042.75
  5. Step 5: Solve for x
    x = 160,435,720,042.75/457,840.52
  6. Step 6: Final answer
    x = 350,418.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.