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Finding the Fourth Proportional to 298,039.20, 447,058.80 and 186,064.80

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Solution

The fourth proportional to 298,039.20, 447,058.80 and 186,064.80 is: 279,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,039.20 : 447,058.80 = 186,064.80 : x
  2. Step 2: Convert to fraction form
    298,039.20/447,058.80 = 186,064.80/x
  3. Step 3: Cross multiply
    298,039.20x = 447,058.80 × 186,064.80
  4. Step 4: Simplify right side
    298,039.20x = 83,181,906,210.24
  5. Step 5: Solve for x
    x = 83,181,906,210.24/298,039.20
  6. Step 6: Final answer
    x = 279,097.20

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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.