Home / 298,724.20-447,740.70-121,143.40

Finding the Fourth Proportional to 298,724.20, 447,740.70 and 121,143.40

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Solution

The fourth proportional to 298,724.20, 447,740.70 and 121,143.40 is: 181,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,724.20 : 447,740.70 = 121,143.40 : x
  2. Step 2: Convert to fraction form
    298,724.20/447,740.70 = 121,143.40/x
  3. Step 3: Cross multiply
    298,724.20x = 447,740.70 × 121,143.40
  4. Step 4: Simplify right side
    298,724.20x = 54,240,830,716.38
  5. Step 5: Solve for x
    x = 54,240,830,716.38/298,724.20
  6. Step 6: Final answer
    x = 181,574.95

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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.