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Finding the Fourth Proportional to 457,848, 631,869.20 and 256,682.88

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Solution

The fourth proportional to 457,848, 631,869.20 and 256,682.88 is: 354,244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,848 : 631,869.20 = 256,682.88 : x
  2. Step 2: Convert to fraction form
    457,848/631,869.20 = 256,682.88/x
  3. Step 3: Cross multiply
    457,848x = 631,869.20 × 256,682.88
  4. Step 4: Simplify right side
    457,848x = 162,190,006,039.30
  5. Step 5: Solve for x
    x = 162,190,006,039.30/457,848
  6. Step 6: Final answer
    x = 354,244.22

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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.