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Finding the Fourth Proportional to 274,872.40, 385,132.40 and 274,872.40

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Solution

The fourth proportional to 274,872.40, 385,132.40 and 274,872.40 is: 385,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,872.40 : 385,132.40 = 274,872.40 : x
  2. Step 2: Convert to fraction form
    274,872.40/385,132.40 = 274,872.40/x
  3. Step 3: Cross multiply
    274,872.40x = 385,132.40 × 274,872.40
  4. Step 4: Simplify right side
    274,872.40x = 105,862,267,105.76
  5. Step 5: Solve for x
    x = 105,862,267,105.76/274,872.40
  6. Step 6: Final answer
    x = 385,132.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.