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Finding the Fourth Proportional to 318,647.31, 477,859.59 and 93,948.09

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Solution

The fourth proportional to 318,647.31, 477,859.59 and 93,948.09 is: 140,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,647.31 : 477,859.59 = 93,948.09 : x
  2. Step 2: Convert to fraction form
    318,647.31/477,859.59 = 93,948.09/x
  3. Step 3: Cross multiply
    318,647.31x = 477,859.59 × 93,948.09
  4. Step 4: Simplify right side
    318,647.31x = 44,893,995,768.68
  5. Step 5: Solve for x
    x = 44,893,995,768.68/318,647.31
  6. Step 6: Final answer
    x = 140,889.30

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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.