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Finding the Fourth Proportional to 239,002.80, 358,338.12 and 105,810.42

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Solution

The fourth proportional to 239,002.80, 358,338.12 and 105,810.42 is: 158,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,002.80 : 358,338.12 = 105,810.42 : x
  2. Step 2: Convert to fraction form
    239,002.80/358,338.12 = 105,810.42/x
  3. Step 3: Cross multiply
    239,002.80x = 358,338.12 × 105,810.42
  4. Step 4: Simplify right side
    239,002.80x = 37,915,906,979.21
  5. Step 5: Solve for x
    x = 37,915,906,979.21/239,002.80
  6. Step 6: Final answer
    x = 158,642.10

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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.