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Finding the Fourth Proportional to 257,039.64, 385,549.84 and 67,498.29

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Solution

The fourth proportional to 257,039.64, 385,549.84 and 67,498.29 is: 101,244.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,039.64 : 385,549.84 = 67,498.29 : x
  2. Step 2: Convert to fraction form
    257,039.64/385,549.84 = 67,498.29/x
  3. Step 3: Cross multiply
    257,039.64x = 385,549.84 × 67,498.29
  4. Step 4: Simplify right side
    257,039.64x = 26,023,954,909.77
  5. Step 5: Solve for x
    x = 26,023,954,909.77/257,039.64
  6. Step 6: Final answer
    x = 101,244.91

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1.5x scale

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.