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Finding the Fourth Proportional to 228,272.40, 342,382.68 and 88,019.28

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Solution

The fourth proportional to 228,272.40, 342,382.68 and 88,019.28 is: 132,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,272.40 : 342,382.68 = 88,019.28 : x
  2. Step 2: Convert to fraction form
    228,272.40/342,382.68 = 88,019.28/x
  3. Step 3: Cross multiply
    228,272.40x = 342,382.68 × 88,019.28
  4. Step 4: Simplify right side
    228,272.40x = 30,136,276,978.07
  5. Step 5: Solve for x
    x = 30,136,276,978.07/228,272.40
  6. Step 6: Final answer
    x = 132,018.93

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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.