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Finding the Fourth Proportional to 288,877.48, 398,751.11 and 198,532.51

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Solution

The fourth proportional to 288,877.48, 398,751.11 and 198,532.51 is: 274,043.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,877.48 : 398,751.11 = 198,532.51 : x
  2. Step 2: Convert to fraction form
    288,877.48/398,751.11 = 198,532.51/x
  3. Step 3: Cross multiply
    288,877.48x = 398,751.11 × 198,532.51
  4. Step 4: Simplify right side
    288,877.48x = 79,165,058,733.59
  5. Step 5: Solve for x
    x = 79,165,058,733.59/288,877.48
  6. Step 6: Final answer
    x = 274,043.72

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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.