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Finding the Fourth Proportional to 535,422.70, 803,587.65 and 220,105.90

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Solution

The fourth proportional to 535,422.70, 803,587.65 and 220,105.90 is: 330,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,422.70 : 803,587.65 = 220,105.90 : x
  2. Step 2: Convert to fraction form
    535,422.70/803,587.65 = 220,105.90/x
  3. Step 3: Cross multiply
    535,422.70x = 803,587.65 × 220,105.90
  4. Step 4: Simplify right side
    535,422.70x = 176,874,382,932.14
  5. Step 5: Solve for x
    x = 176,874,382,932.14/535,422.70
  6. Step 6: Final answer
    x = 330,345.32

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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.