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Finding the Fourth Proportional to 288,793.80, 433,125.90 and 138,957.57

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Solution

The fourth proportional to 288,793.80, 433,125.90 and 138,957.57 is: 208,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,793.80 : 433,125.90 = 138,957.57 : x
  2. Step 2: Convert to fraction form
    288,793.80/433,125.90 = 138,957.57/x
  3. Step 3: Cross multiply
    288,793.80x = 433,125.90 × 138,957.57
  4. Step 4: Simplify right side
    288,793.80x = 60,186,122,568.06
  5. Step 5: Solve for x
    x = 60,186,122,568.06/288,793.80
  6. Step 6: Final answer
    x = 208,405.18

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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.