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Finding the Fourth Proportional to 298,450.80, 447,287.40 and 120,812.40

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Solution

The fourth proportional to 298,450.80, 447,287.40 and 120,812.40 is: 181,061.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,450.80 : 447,287.40 = 120,812.40 : x
  2. Step 2: Convert to fraction form
    298,450.80/447,287.40 = 120,812.40/x
  3. Step 3: Cross multiply
    298,450.80x = 447,287.40 × 120,812.40
  4. Step 4: Simplify right side
    298,450.80x = 54,037,864,283.76
  5. Step 5: Solve for x
    x = 54,037,864,283.76/298,450.80
  6. Step 6: Final answer
    x = 181,061.21

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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.