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Finding the Fourth Proportional to 265,684.64, 398,440.28 and 88,143.98

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Solution

The fourth proportional to 265,684.64, 398,440.28 and 88,143.98 is: 132,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,684.64 : 398,440.28 = 88,143.98 : x
  2. Step 2: Convert to fraction form
    265,684.64/398,440.28 = 88,143.98/x
  3. Step 3: Cross multiply
    265,684.64x = 398,440.28 × 88,143.98
  4. Step 4: Simplify right side
    265,684.64x = 35,120,112,071.51
  5. Step 5: Solve for x
    x = 35,120,112,071.51/265,684.64
  6. Step 6: Final answer
    x = 132,187.21

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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.