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Finding the Fourth Proportional to 499,340.80, 749,011.20 and 219,404.80

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Solution

The fourth proportional to 499,340.80, 749,011.20 and 219,404.80 is: 329,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,340.80 : 749,011.20 = 219,404.80 : x
  2. Step 2: Convert to fraction form
    499,340.80/749,011.20 = 219,404.80/x
  3. Step 3: Cross multiply
    499,340.80x = 749,011.20 × 219,404.80
  4. Step 4: Simplify right side
    499,340.80x = 164,336,652,533.76
  5. Step 5: Solve for x
    x = 164,336,652,533.76/499,340.80
  6. Step 6: Final answer
    x = 329,107.20

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1.5x scale

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.