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Finding the Fourth Proportional to 480,808.32, 721,315.44 and 143,874.96

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Solution

The fourth proportional to 480,808.32, 721,315.44 and 143,874.96 is: 215,843.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,808.32 : 721,315.44 = 143,874.96 : x
  2. Step 2: Convert to fraction form
    480,808.32/721,315.44 = 143,874.96/x
  3. Step 3: Cross multiply
    480,808.32x = 721,315.44 × 143,874.96
  4. Step 4: Simplify right side
    480,808.32x = 103,779,230,077.38
  5. Step 5: Solve for x
    x = 103,779,230,077.38/480,808.32
  6. Step 6: Final answer
    x = 215,843.25

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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.