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Finding the Fourth Proportional to 295,340.80, 443,011.20 and 253,868.80

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Solution

The fourth proportional to 295,340.80, 443,011.20 and 253,868.80 is: 380,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,340.80 : 443,011.20 = 253,868.80 : x
  2. Step 2: Convert to fraction form
    295,340.80/443,011.20 = 253,868.80/x
  3. Step 3: Cross multiply
    295,340.80x = 443,011.20 × 253,868.80
  4. Step 4: Simplify right side
    295,340.80x = 112,466,721,730.56
  5. Step 5: Solve for x
    x = 112,466,721,730.56/295,340.80
  6. Step 6: Final answer
    x = 380,803.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.