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Finding the Fourth Proportional to 331,608.40, 497,585.40 and 144,638.80

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Solution

The fourth proportional to 331,608.40, 497,585.40 and 144,638.80 is: 217,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,608.40 : 497,585.40 = 144,638.80 : x
  2. Step 2: Convert to fraction form
    331,608.40/497,585.40 = 144,638.80/x
  3. Step 3: Cross multiply
    331,608.40x = 497,585.40 × 144,638.80
  4. Step 4: Simplify right side
    331,608.40x = 71,970,155,153.52
  5. Step 5: Solve for x
    x = 71,970,155,153.52/331,608.40
  6. Step 6: Final answer
    x = 217,033.57

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1.5x scale

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.