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Finding the Fourth Proportional to 259,471.43, 358,070.42 and 140,239.43

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Solution

The fourth proportional to 259,471.43, 358,070.42 and 140,239.43 is: 193,530.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,471.43 : 358,070.42 = 140,239.43 : x
  2. Step 2: Convert to fraction form
    259,471.43/358,070.42 = 140,239.43/x
  3. Step 3: Cross multiply
    259,471.43x = 358,070.42 × 140,239.43
  4. Step 4: Simplify right side
    259,471.43x = 50,215,590,899.46
  5. Step 5: Solve for x
    x = 50,215,590,899.46/259,471.43
  6. Step 6: Final answer
    x = 193,530.33

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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.