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Finding the Fourth Proportional to 289,118, 398,545.44 and 248,614.76

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Solution

The fourth proportional to 289,118, 398,545.44 and 248,614.76 is: 342,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,118 : 398,545.44 = 248,614.76 : x
  2. Step 2: Convert to fraction form
    289,118/398,545.44 = 248,614.76/x
  3. Step 3: Cross multiply
    289,118x = 398,545.44 × 248,614.76
  4. Step 4: Simplify right side
    289,118x = 99,084,278,914.69
  5. Step 5: Solve for x
    x = 99,084,278,914.69/289,118
  6. Step 6: Final answer
    x = 342,712.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.