Home / 457,853.76-631,836.20-256,649.76

Finding the Fourth Proportional to 457,853.76, 631,836.20 and 256,649.76

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Solution

The fourth proportional to 457,853.76, 631,836.20 and 256,649.76 is: 354,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,853.76 : 631,836.20 = 256,649.76 : x
  2. Step 2: Convert to fraction form
    457,853.76/631,836.20 = 256,649.76/x
  3. Step 3: Cross multiply
    457,853.76x = 631,836.20 × 256,649.76
  4. Step 4: Simplify right side
    457,853.76x = 162,160,609,089.31
  5. Step 5: Solve for x
    x = 162,160,609,089.31/457,853.76
  6. Step 6: Final answer
    x = 354,175.55

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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.