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Finding the Fourth Proportional to 480,673.84, 721,114.20 and 143,741.20

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Solution

The fourth proportional to 480,673.84, 721,114.20 and 143,741.20 is: 215,642.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,673.84 : 721,114.20 = 143,741.20 : x
  2. Step 2: Convert to fraction form
    480,673.84/721,114.20 = 143,741.20/x
  3. Step 3: Cross multiply
    480,673.84x = 721,114.20 × 143,741.20
  4. Step 4: Simplify right side
    480,673.84x = 103,653,820,445.04
  5. Step 5: Solve for x
    x = 103,653,820,445.04/480,673.84
  6. Step 6: Final answer
    x = 215,642.73

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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.