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Finding the Fourth Proportional to 298,545.16, 447,810.78 and 121,004.68

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Solution

The fourth proportional to 298,545.16, 447,810.78 and 121,004.68 is: 181,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,545.16 : 447,810.78 = 121,004.68 : x
  2. Step 2: Convert to fraction form
    298,545.16/447,810.78 = 121,004.68/x
  3. Step 3: Cross multiply
    298,545.16x = 447,810.78 × 121,004.68
  4. Step 4: Simplify right side
    298,545.16x = 54,187,200,134.45
  5. Step 5: Solve for x
    x = 54,187,200,134.45/298,545.16
  6. Step 6: Final answer
    x = 181,504.20

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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.