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Finding the Fourth Proportional to 359,154.80, 538,805.10 and 122,521.40

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Solution

The fourth proportional to 359,154.80, 538,805.10 and 122,521.40 is: 183,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,154.80 : 538,805.10 = 122,521.40 : x
  2. Step 2: Convert to fraction form
    359,154.80/538,805.10 = 122,521.40/x
  3. Step 3: Cross multiply
    359,154.80x = 538,805.10 × 122,521.40
  4. Step 4: Simplify right side
    359,154.80x = 66,015,155,179.14
  5. Step 5: Solve for x
    x = 66,015,155,179.14/359,154.80
  6. Step 6: Final answer
    x = 183,806.97

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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.