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Finding the Fourth Proportional to 432,859.80, 649,289.70 and 266,741.40

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Solution

The fourth proportional to 432,859.80, 649,289.70 and 266,741.40 is: 400,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,859.80 : 649,289.70 = 266,741.40 : x
  2. Step 2: Convert to fraction form
    432,859.80/649,289.70 = 266,741.40/x
  3. Step 3: Cross multiply
    432,859.80x = 649,289.70 × 266,741.40
  4. Step 4: Simplify right side
    432,859.80x = 173,192,443,583.58
  5. Step 5: Solve for x
    x = 173,192,443,583.58/432,859.80
  6. Step 6: Final answer
    x = 400,112.10

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Similar ratio
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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.