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Finding the Fourth Proportional to 239,259.05, 358,944.10 and 81,488.87

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Solution

The fourth proportional to 239,259.05, 358,944.10 and 81,488.87 is: 122,252.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,259.05 : 358,944.10 = 81,488.87 : x
  2. Step 2: Convert to fraction form
    239,259.05/358,944.10 = 81,488.87/x
  3. Step 3: Cross multiply
    239,259.05x = 358,944.10 × 81,488.87
  4. Step 4: Simplify right side
    239,259.05x = 29,249,949,102.17
  5. Step 5: Solve for x
    x = 29,249,949,102.17/239,259.05
  6. Step 6: Final answer
    x = 122,252.22

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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.