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Finding the Fourth Proportional to 664,810.40, 997,223.70 and 215,527.70

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Solution

The fourth proportional to 664,810.40, 997,223.70 and 215,527.70 is: 323,294.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,810.40 : 997,223.70 = 215,527.70 : x
  2. Step 2: Convert to fraction form
    664,810.40/997,223.70 = 215,527.70/x
  3. Step 3: Cross multiply
    664,810.40x = 997,223.70 × 215,527.70
  4. Step 4: Simplify right side
    664,810.40x = 214,929,330,446.49
  5. Step 5: Solve for x
    x = 214,929,330,446.49/664,810.40
  6. Step 6: Final answer
    x = 323,294.18

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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.