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Finding the Fourth Proportional to 259,870.38, 358,621.13 and 140,638.38

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Solution

The fourth proportional to 259,870.38, 358,621.13 and 140,638.38 is: 194,080.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,870.38 : 358,621.13 = 140,638.38 : x
  2. Step 2: Convert to fraction form
    259,870.38/358,621.13 = 140,638.38/x
  3. Step 3: Cross multiply
    259,870.38x = 358,621.13 × 140,638.38
  4. Step 4: Simplify right side
    259,870.38x = 50,435,894,756.97
  5. Step 5: Solve for x
    x = 50,435,894,756.97/259,870.38
  6. Step 6: Final answer
    x = 194,080.97

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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.