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Finding the Fourth Proportional to 218,064.43, 300,884.80 and 127,402.89

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Solution

The fourth proportional to 218,064.43, 300,884.80 and 127,402.89 is: 175,790.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,064.43 : 300,884.80 = 127,402.89 : x
  2. Step 2: Convert to fraction form
    218,064.43/300,884.80 = 127,402.89/x
  3. Step 3: Cross multiply
    218,064.43x = 300,884.80 × 127,402.89
  4. Step 4: Simplify right side
    218,064.43x = 38,333,593,077.07
  5. Step 5: Solve for x
    x = 38,333,593,077.07/218,064.43
  6. Step 6: Final answer
    x = 175,790.22

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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.