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Finding the Fourth Proportional to 223,999.56, 309,118.68 and 123,397.56

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Solution

The fourth proportional to 223,999.56, 309,118.68 and 123,397.56 is: 170,288.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,999.56 : 309,118.68 = 123,397.56 : x
  2. Step 2: Convert to fraction form
    223,999.56/309,118.68 = 123,397.56/x
  3. Step 3: Cross multiply
    223,999.56x = 309,118.68 × 123,397.56
  4. Step 4: Simplify right side
    223,999.56x = 38,144,490,862.42
  5. Step 5: Solve for x
    x = 38,144,490,862.42/223,999.56
  6. Step 6: Final answer
    x = 170,288.24

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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.