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Finding the Fourth Proportional to 218,099.20, 300,956.16 and 127,476.40

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Solution

The fourth proportional to 218,099.20, 300,956.16 and 127,476.40 is: 175,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,099.20 : 300,956.16 = 127,476.40 : x
  2. Step 2: Convert to fraction form
    218,099.20/300,956.16 = 127,476.40/x
  3. Step 3: Cross multiply
    218,099.20x = 300,956.16 × 127,476.40
  4. Step 4: Simplify right side
    218,099.20x = 38,364,807,834.62
  5. Step 5: Solve for x
    x = 38,364,807,834.62/218,099.20
  6. Step 6: Final answer
    x = 175,905.31

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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.