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Finding the Fourth Proportional to 402,865.20, 604,297.80 and 302,481.90

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Solution

The fourth proportional to 402,865.20, 604,297.80 and 302,481.90 is: 453,722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,865.20 : 604,297.80 = 302,481.90 : x
  2. Step 2: Convert to fraction form
    402,865.20/604,297.80 = 302,481.90/x
  3. Step 3: Cross multiply
    402,865.20x = 604,297.80 × 302,481.90
  4. Step 4: Simplify right side
    402,865.20x = 182,789,146,709.82
  5. Step 5: Solve for x
    x = 182,789,146,709.82/402,865.20
  6. Step 6: Final answer
    x = 453,722.85

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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.