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Finding the Fourth Proportional to 538,651.60, 807,005.40 and 257,549.20

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Solution

The fourth proportional to 538,651.60, 807,005.40 and 257,549.20 is: 385,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,651.60 : 807,005.40 = 257,549.20 : x
  2. Step 2: Convert to fraction form
    538,651.60/807,005.40 = 257,549.20/x
  3. Step 3: Cross multiply
    538,651.60x = 807,005.40 × 257,549.20
  4. Step 4: Simplify right side
    538,651.60x = 207,843,595,165.68
  5. Step 5: Solve for x
    x = 207,843,595,165.68/538,651.60
  6. Step 6: Final answer
    x = 385,859.05

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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.