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Finding the Fourth Proportional to 480,903.85, 721,500.18 and 143,955.46

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Solution

The fourth proportional to 480,903.85, 721,500.18 and 143,955.46 is: 215,976.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,903.85 : 721,500.18 = 143,955.46 : x
  2. Step 2: Convert to fraction form
    480,903.85/721,500.18 = 143,955.46/x
  3. Step 3: Cross multiply
    480,903.85x = 721,500.18 × 143,955.46
  4. Step 4: Simplify right side
    480,903.85x = 103,863,890,301.98
  5. Step 5: Solve for x
    x = 103,863,890,301.98/480,903.85
  6. Step 6: Final answer
    x = 215,976.42

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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.