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Finding the Fourth Proportional to 457,520.48, 631,377.84 and 256,317.92

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Solution

The fourth proportional to 457,520.48, 631,377.84 and 256,317.92 is: 353,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,520.48 : 631,377.84 = 256,317.92 : x
  2. Step 2: Convert to fraction form
    457,520.48/631,377.84 = 256,317.92/x
  3. Step 3: Cross multiply
    457,520.48x = 631,377.84 × 256,317.92
  4. Step 4: Simplify right side
    457,520.48x = 161,833,454,682.89
  5. Step 5: Solve for x
    x = 161,833,454,682.89/457,520.48
  6. Step 6: Final answer
    x = 353,718.49

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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.