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Finding the Fourth Proportional to 668,856.68, 1,003,389.35 and 219,475.26

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Solution

The fourth proportional to 668,856.68, 1,003,389.35 and 219,475.26 is: 329,247.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,856.68 : 1,003,389.35 = 219,475.26 : x
  2. Step 2: Convert to fraction form
    668,856.68/1,003,389.35 = 219,475.26/x
  3. Step 3: Cross multiply
    668,856.68x = 1,003,389.35 × 219,475.26
  4. Step 4: Simplify right side
    668,856.68x = 220,219,138,472.48
  5. Step 5: Solve for x
    x = 220,219,138,472.48/668,856.68
  6. Step 6: Final answer
    x = 329,247.12

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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.