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Finding the Fourth Proportional to 359,207.62, 538,776.44 and 145,988.31

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Solution

The fourth proportional to 359,207.62, 538,776.44 and 145,988.31 is: 218,968.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,207.62 : 538,776.44 = 145,988.31 : x
  2. Step 2: Convert to fraction form
    359,207.62/538,776.44 = 145,988.31/x
  3. Step 3: Cross multiply
    359,207.62x = 538,776.44 × 145,988.31
  4. Step 4: Simplify right side
    359,207.62x = 78,655,061,213.47
  5. Step 5: Solve for x
    x = 78,655,061,213.47/359,207.62
  6. Step 6: Final answer
    x = 218,968.25

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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.