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Finding the Fourth Proportional to 318,155.40, 477,233.10 and 266,056.20

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Solution

The fourth proportional to 318,155.40, 477,233.10 and 266,056.20 is: 399,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,155.40 : 477,233.10 = 266,056.20 : x
  2. Step 2: Convert to fraction form
    318,155.40/477,233.10 = 266,056.20/x
  3. Step 3: Cross multiply
    318,155.40x = 477,233.10 × 266,056.20
  4. Step 4: Simplify right side
    318,155.40x = 126,970,825,100.22
  5. Step 5: Solve for x
    x = 126,970,825,100.22/318,155.40
  6. Step 6: Final answer
    x = 399,084.30

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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.