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Finding the Fourth Proportional to 218,139.06, 300,930.87 and 127,498.86

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Solution

The fourth proportional to 218,139.06, 300,930.87 and 127,498.86 is: 175,889.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,139.06 : 300,930.87 = 127,498.86 : x
  2. Step 2: Convert to fraction form
    218,139.06/300,930.87 = 127,498.86/x
  3. Step 3: Cross multiply
    218,139.06x = 300,930.87 × 127,498.86
  4. Step 4: Simplify right side
    218,139.06x = 38,368,342,863.81
  5. Step 5: Solve for x
    x = 38,368,342,863.81/218,139.06
  6. Step 6: Final answer
    x = 175,889.37

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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.