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Finding the Fourth Proportional to 542,709.53, 814,103.49 and 143,345.11

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Solution

The fourth proportional to 542,709.53, 814,103.49 and 143,345.11 is: 215,028.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,709.53 : 814,103.49 = 143,345.11 : x
  2. Step 2: Convert to fraction form
    542,709.53/814,103.49 = 143,345.11/x
  3. Step 3: Cross multiply
    542,709.53x = 814,103.49 × 143,345.11
  4. Step 4: Simplify right side
    542,709.53x = 116,697,754,354.16
  5. Step 5: Solve for x
    x = 116,697,754,354.16/542,709.53
  6. Step 6: Final answer
    x = 215,028.02

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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.