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Finding the Fourth Proportional to 535,421.70, 803,586.15 and 220,104.90

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Solution

The fourth proportional to 535,421.70, 803,586.15 and 220,104.90 is: 330,343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,421.70 : 803,586.15 = 220,104.90 : x
  2. Step 2: Convert to fraction form
    535,421.70/803,586.15 = 220,104.90/x
  3. Step 3: Cross multiply
    535,421.70x = 803,586.15 × 220,104.90
  4. Step 4: Simplify right side
    535,421.70x = 176,873,249,187.14
  5. Step 5: Solve for x
    x = 176,873,249,187.14/535,421.70
  6. Step 6: Final answer
    x = 330,343.82

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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.