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Finding the Fourth Proportional to 223,389.29, 308,279.59 and 121,414.76

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Solution

The fourth proportional to 223,389.29, 308,279.59 and 121,414.76 is: 167,553.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,389.29 : 308,279.59 = 121,414.76 : x
  2. Step 2: Convert to fraction form
    223,389.29/308,279.59 = 121,414.76/x
  3. Step 3: Cross multiply
    223,389.29x = 308,279.59 × 121,414.76
  4. Step 4: Simplify right side
    223,389.29x = 37,429,692,899.91
  5. Step 5: Solve for x
    x = 37,429,692,899.91/223,389.29
  6. Step 6: Final answer
    x = 167,553.66

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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.