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Finding the Fourth Proportional to 668,896.60, 1,003,344.90 and 219,686.80

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Solution

The fourth proportional to 668,896.60, 1,003,344.90 and 219,686.80 is: 329,530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,896.60 : 1,003,344.90 = 219,686.80 : x
  2. Step 2: Convert to fraction form
    668,896.60/1,003,344.90 = 219,686.80/x
  3. Step 3: Cross multiply
    668,896.60x = 1,003,344.90 × 219,686.80
  4. Step 4: Simplify right side
    668,896.60x = 220,421,630,377.32
  5. Step 5: Solve for x
    x = 220,421,630,377.32/668,896.60
  6. Step 6: Final answer
    x = 329,530.20

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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.