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Finding the Fourth Proportional to 486,335.40, 729,330.30 and 220,223.40

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Solution

The fourth proportional to 486,335.40, 729,330.30 and 220,223.40 is: 330,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,335.40 : 729,330.30 = 220,223.40 : x
  2. Step 2: Convert to fraction form
    486,335.40/729,330.30 = 220,223.40/x
  3. Step 3: Cross multiply
    486,335.40x = 729,330.30 × 220,223.40
  4. Step 4: Simplify right side
    486,335.40x = 160,615,598,389.02
  5. Step 5: Solve for x
    x = 160,615,598,389.02/486,335.40
  6. Step 6: Final answer
    x = 330,256.85

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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.