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Finding the Fourth Proportional to 359,020.81, 538,631.12 and 156,634.62

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Solution

The fourth proportional to 359,020.81, 538,631.12 and 156,634.62 is: 234,995.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,020.81 : 538,631.12 = 156,634.62 : x
  2. Step 2: Convert to fraction form
    359,020.81/538,631.12 = 156,634.62/x
  3. Step 3: Cross multiply
    359,020.81x = 538,631.12 × 156,634.62
  4. Step 4: Simplify right side
    359,020.81x = 84,368,280,801.37
  5. Step 5: Solve for x
    x = 84,368,280,801.37/359,020.81
  6. Step 6: Final answer
    x = 234,995.52

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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.