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Finding the Fourth Proportional to 358,987.20, 538,918.20 and 181,402.80

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Solution

The fourth proportional to 358,987.20, 538,918.20 and 181,402.80 is: 272,325.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,987.20 : 538,918.20 = 181,402.80 : x
  2. Step 2: Convert to fraction form
    358,987.20/538,918.20 = 181,402.80/x
  3. Step 3: Cross multiply
    358,987.20x = 538,918.20 × 181,402.80
  4. Step 4: Simplify right side
    358,987.20x = 97,761,270,450.96
  5. Step 5: Solve for x
    x = 97,761,270,450.96/358,987.20
  6. Step 6: Final answer
    x = 272,325.23

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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.