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Finding the Fourth Proportional to 298,717.44, 448,077.78 and 88,357.20

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Solution

The fourth proportional to 298,717.44, 448,077.78 and 88,357.20 is: 132,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,717.44 : 448,077.78 = 88,357.20 : x
  2. Step 2: Convert to fraction form
    298,717.44/448,077.78 = 88,357.20/x
  3. Step 3: Cross multiply
    298,717.44x = 448,077.78 × 88,357.20
  4. Step 4: Simplify right side
    298,717.44x = 39,590,898,023.02
  5. Step 5: Solve for x
    x = 39,590,898,023.02/298,717.44
  6. Step 6: Final answer
    x = 132,536.28

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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.