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Finding the Fourth Proportional to 542,708.70, 814,101.92 and 143,345.49

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Solution

The fourth proportional to 542,708.70, 814,101.92 and 143,345.49 is: 215,028.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,708.70 : 814,101.92 = 143,345.49 : x
  2. Step 2: Convert to fraction form
    542,708.70/814,101.92 = 143,345.49/x
  3. Step 3: Cross multiply
    542,708.70x = 814,101.92 × 143,345.49
  4. Step 4: Simplify right side
    542,708.70x = 116,697,838,632.34
  5. Step 5: Solve for x
    x = 116,697,838,632.34/542,708.70
  6. Step 6: Final answer
    x = 215,028.50

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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.