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Finding the Fourth Proportional to 542,990.40, 814,481.55 and 163,910.40

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Solution

The fourth proportional to 542,990.40, 814,481.55 and 163,910.40 is: 245,864.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,990.40 : 814,481.55 = 163,910.40 : x
  2. Step 2: Convert to fraction form
    542,990.40/814,481.55 = 163,910.40/x
  3. Step 3: Cross multiply
    542,990.40x = 814,481.55 × 163,910.40
  4. Step 4: Simplify right side
    542,990.40x = 133,501,996,653.12
  5. Step 5: Solve for x
    x = 133,501,996,653.12/542,990.40
  6. Step 6: Final answer
    x = 245,864.38

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1.5x scale

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.