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Finding the Fourth Proportional to 218,934, 302,129.28 and 118,332

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Solution

The fourth proportional to 218,934, 302,129.28 and 118,332 is: 163,298.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,934 : 302,129.28 = 118,332 : x
  2. Step 2: Convert to fraction form
    218,934/302,129.28 = 118,332/x
  3. Step 3: Cross multiply
    218,934x = 302,129.28 × 118,332
  4. Step 4: Simplify right side
    218,934x = 35,751,561,960.96
  5. Step 5: Solve for x
    x = 35,751,561,960.96/218,934
  6. Step 6: Final answer
    x = 163,298.35

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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.