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Finding the Fourth Proportional to 265,719.40, 398,492.38 and 88,178.72

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Solution

The fourth proportional to 265,719.40, 398,492.38 and 88,178.72 is: 132,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,719.40 : 398,492.38 = 88,178.72 : x
  2. Step 2: Convert to fraction form
    265,719.40/398,492.38 = 88,178.72/x
  3. Step 3: Cross multiply
    265,719.40x = 398,492.38 × 88,178.72
  4. Step 4: Simplify right side
    265,719.40x = 35,138,547,998.15
  5. Step 5: Solve for x
    x = 35,138,547,998.15/265,719.40
  6. Step 6: Final answer
    x = 132,239.30

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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.