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Finding the Fourth Proportional to 218,086.27, 300,914.53 and 127,424.72

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Solution

The fourth proportional to 218,086.27, 300,914.53 and 127,424.72 is: 175,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,086.27 : 300,914.53 = 127,424.72 : x
  2. Step 2: Convert to fraction form
    218,086.27/300,914.53 = 127,424.72/x
  3. Step 3: Cross multiply
    218,086.27x = 300,914.53 × 127,424.72
  4. Step 4: Simplify right side
    218,086.27x = 38,343,949,854.16
  5. Step 5: Solve for x
    x = 38,343,949,854.16/218,086.27
  6. Step 6: Final answer
    x = 175,820.10

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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.