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Finding the Fourth Proportional to 321,130.92, 443,154.87 and 177,890.52

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Solution

The fourth proportional to 321,130.92, 443,154.87 and 177,890.52 is: 245,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,130.92 : 443,154.87 = 177,890.52 : x
  2. Step 2: Convert to fraction form
    321,130.92/443,154.87 = 177,890.52/x
  3. Step 3: Cross multiply
    321,130.92x = 443,154.87 × 177,890.52
  4. Step 4: Simplify right side
    321,130.92x = 78,833,050,264.83
  5. Step 5: Solve for x
    x = 78,833,050,264.83/321,130.92
  6. Step 6: Final answer
    x = 245,485.70

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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.