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Finding the Fourth Proportional to 247,345.80, 341,343.30 and 139,910.76

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Solution

The fourth proportional to 247,345.80, 341,343.30 and 139,910.76 is: 193,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,345.80 : 341,343.30 = 139,910.76 : x
  2. Step 2: Convert to fraction form
    247,345.80/341,343.30 = 139,910.76/x
  3. Step 3: Cross multiply
    247,345.80x = 341,343.30 × 139,910.76
  4. Step 4: Simplify right side
    247,345.80x = 47,757,600,523.91
  5. Step 5: Solve for x
    x = 47,757,600,523.91/247,345.80
  6. Step 6: Final answer
    x = 193,080.30

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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.