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Finding the Fourth Proportional to 298,865.36, 448,299.48 and 88,507.28

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Solution

The fourth proportional to 298,865.36, 448,299.48 and 88,507.28 is: 132,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,865.36 : 448,299.48 = 88,507.28 : x
  2. Step 2: Convert to fraction form
    298,865.36/448,299.48 = 88,507.28/x
  3. Step 3: Cross multiply
    298,865.36x = 448,299.48 × 88,507.28
  4. Step 4: Simplify right side
    298,865.36x = 39,677,767,600.21
  5. Step 5: Solve for x
    x = 39,677,767,600.21/298,865.36
  6. Step 6: Final answer
    x = 132,761.35

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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.