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Finding the Fourth Proportional to 535,537.80, 803,306.70 and 219,832.20

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Solution

The fourth proportional to 535,537.80, 803,306.70 and 219,832.20 is: 329,748.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,537.80 : 803,306.70 = 219,832.20 : x
  2. Step 2: Convert to fraction form
    535,537.80/803,306.70 = 219,832.20/x
  3. Step 3: Cross multiply
    535,537.80x = 803,306.70 × 219,832.20
  4. Step 4: Simplify right side
    535,537.80x = 176,592,679,135.74
  5. Step 5: Solve for x
    x = 176,592,679,135.74/535,537.80
  6. Step 6: Final answer
    x = 329,748.30

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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.