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Finding the Fourth Proportional to 338,139.78, 466,632.87 and 187,236.78

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Solution

The fourth proportional to 338,139.78, 466,632.87 and 187,236.78 is: 258,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,139.78 : 466,632.87 = 187,236.78 : x
  2. Step 2: Convert to fraction form
    338,139.78/466,632.87 = 187,236.78/x
  3. Step 3: Cross multiply
    338,139.78x = 466,632.87 × 187,236.78
  4. Step 4: Simplify right side
    338,139.78x = 87,370,836,020.96
  5. Step 5: Solve for x
    x = 87,370,836,020.96/338,139.78
  6. Step 6: Final answer
    x = 258,386.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.