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Finding the Fourth Proportional to 480,810.32, 721,318.44 and 143,876.96

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Solution

The fourth proportional to 480,810.32, 721,318.44 and 143,876.96 is: 215,846.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,810.32 : 721,318.44 = 143,876.96 : x
  2. Step 2: Convert to fraction form
    480,810.32/721,318.44 = 143,876.96/x
  3. Step 3: Cross multiply
    480,810.32x = 721,318.44 × 143,876.96
  4. Step 4: Simplify right side
    480,810.32x = 103,781,104,339.14
  5. Step 5: Solve for x
    x = 103,781,104,339.14/480,810.32
  6. Step 6: Final answer
    x = 215,846.25

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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.