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Finding the Fourth Proportional to 538,218.90, 807,182.55 and 159,138.90

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Solution

The fourth proportional to 538,218.90, 807,182.55 and 159,138.90 is: 238,665.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,218.90 : 807,182.55 = 159,138.90 : x
  2. Step 2: Convert to fraction form
    538,218.90/807,182.55 = 159,138.90/x
  3. Step 3: Cross multiply
    538,218.90x = 807,182.55 × 159,138.90
  4. Step 4: Simplify right side
    538,218.90x = 128,454,143,106.20
  5. Step 5: Solve for x
    x = 128,454,143,106.20/538,218.90
  6. Step 6: Final answer
    x = 238,665.24

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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.