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Finding the Fourth Proportional to 228,247.62, 342,371.57 and 86,054.28

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Solution

The fourth proportional to 228,247.62, 342,371.57 and 86,054.28 is: 129,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,247.62 : 342,371.57 = 86,054.28 : x
  2. Step 2: Convert to fraction form
    228,247.62/342,371.57 = 86,054.28/x
  3. Step 3: Cross multiply
    228,247.62x = 342,371.57 × 86,054.28
  4. Step 4: Simplify right side
    228,247.62x = 29,462,538,948.82
  5. Step 5: Solve for x
    x = 29,462,538,948.82/228,247.62
  6. Step 6: Final answer
    x = 129,081.47

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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.