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Finding the Fourth Proportional to 619,672.47, 929,228.32 and 220,323.88

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Solution

The fourth proportional to 619,672.47, 929,228.32 and 220,323.88 is: 330,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,672.47 : 929,228.32 = 220,323.88 : x
  2. Step 2: Convert to fraction form
    619,672.47/929,228.32 = 220,323.88/x
  3. Step 3: Cross multiply
    619,672.47x = 929,228.32 × 220,323.88
  4. Step 4: Simplify right side
    619,672.47x = 204,731,188,868.28
  5. Step 5: Solve for x
    x = 204,731,188,868.28/619,672.47
  6. Step 6: Final answer
    x = 330,386.13

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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.