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Finding the Fourth Proportional to 359,427.77, 538,609.18 and 145,936.07

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Solution

The fourth proportional to 359,427.77, 538,609.18 and 145,936.07 is: 218,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,427.77 : 538,609.18 = 145,936.07 : x
  2. Step 2: Convert to fraction form
    359,427.77/538,609.18 = 145,936.07/x
  3. Step 3: Cross multiply
    359,427.77x = 538,609.18 × 145,936.07
  4. Step 4: Simplify right side
    359,427.77x = 78,602,506,995.12
  5. Step 5: Solve for x
    x = 78,602,506,995.12/359,427.77
  6. Step 6: Final answer
    x = 218,687.91

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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.