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Finding the Fourth Proportional to 250,511.92, 345,699.30 and 143,079.74

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Solution

The fourth proportional to 250,511.92, 345,699.30 and 143,079.74 is: 197,445.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,511.92 : 345,699.30 = 143,079.74 : x
  2. Step 2: Convert to fraction form
    250,511.92/345,699.30 = 143,079.74/x
  3. Step 3: Cross multiply
    250,511.92x = 345,699.30 × 143,079.74
  4. Step 4: Simplify right side
    250,511.92x = 49,462,565,962.18
  5. Step 5: Solve for x
    x = 49,462,565,962.18/250,511.92
  6. Step 6: Final answer
    x = 197,445.96

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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.