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Finding the Fourth Proportional to 251,281.92, 346,780.80 and 143,863.68

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Solution

The fourth proportional to 251,281.92, 346,780.80 and 143,863.68 is: 198,538.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,281.92 : 346,780.80 = 143,863.68 : x
  2. Step 2: Convert to fraction form
    251,281.92/346,780.80 = 143,863.68/x
  3. Step 3: Cross multiply
    251,281.92x = 346,780.80 × 143,863.68
  4. Step 4: Simplify right side
    251,281.92x = 49,889,162,041.34
  5. Step 5: Solve for x
    x = 49,889,162,041.34/251,281.92
  6. Step 6: Final answer
    x = 198,538.61

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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.