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Finding the Fourth Proportional to 297,440.78, 446,161.16 and 87,078.72

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Solution

The fourth proportional to 297,440.78, 446,161.16 and 87,078.72 is: 130,618.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,440.78 : 446,161.16 = 87,078.72 : x
  2. Step 2: Convert to fraction form
    297,440.78/446,161.16 = 87,078.72/x
  3. Step 3: Cross multiply
    297,440.78x = 446,161.16 × 87,078.72
  4. Step 4: Simplify right side
    297,440.78x = 38,851,142,726.52
  5. Step 5: Solve for x
    x = 38,851,142,726.52/297,440.78
  6. Step 6: Final answer
    x = 130,618.08

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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.