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Finding the Fourth Proportional to 218,613.62, 301,708.31 and 127,964.09

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Solution

The fourth proportional to 218,613.62, 301,708.31 and 127,964.09 is: 176,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,613.62 : 301,708.31 = 127,964.09 : x
  2. Step 2: Convert to fraction form
    218,613.62/301,708.31 = 127,964.09/x
  3. Step 3: Cross multiply
    218,613.62x = 301,708.31 × 127,964.09
  4. Step 4: Simplify right side
    218,613.62x = 38,607,829,334.59
  5. Step 5: Solve for x
    x = 38,607,829,334.59/218,613.62
  6. Step 6: Final answer
    x = 176,603.04

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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.