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Finding the Fourth Proportional to 265,926.48, 398,886.66 and 76,391.49

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Solution

The fourth proportional to 265,926.48, 398,886.66 and 76,391.49 is: 114,586.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,926.48 : 398,886.66 = 76,391.49 : x
  2. Step 2: Convert to fraction form
    265,926.48/398,886.66 = 76,391.49/x
  3. Step 3: Cross multiply
    265,926.48x = 398,886.66 × 76,391.49
  4. Step 4: Simplify right side
    265,926.48x = 30,471,546,298.52
  5. Step 5: Solve for x
    x = 30,471,546,298.52/265,926.48
  6. Step 6: Final answer
    x = 114,586.36

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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.