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Finding the Fourth Proportional to 302,691, 417,726.54 and 168,555

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Solution

The fourth proportional to 302,691, 417,726.54 and 168,555 is: 232,613.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,691 : 417,726.54 = 168,555 : x
  2. Step 2: Convert to fraction form
    302,691/417,726.54 = 168,555/x
  3. Step 3: Cross multiply
    302,691x = 417,726.54 × 168,555
  4. Step 4: Simplify right side
    302,691x = 70,409,896,949.70
  5. Step 5: Solve for x
    x = 70,409,896,949.70/302,691
  6. Step 6: Final answer
    x = 232,613.12

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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.