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Finding the Fourth Proportional to 318,448.43, 477,031.52 and 147,429.08

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Solution

The fourth proportional to 318,448.43, 477,031.52 and 147,429.08 is: 220,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,448.43 : 477,031.52 = 147,429.08 : x
  2. Step 2: Convert to fraction form
    318,448.43/477,031.52 = 147,429.08/x
  3. Step 3: Cross multiply
    318,448.43x = 477,031.52 × 147,429.08
  4. Step 4: Simplify right side
    318,448.43x = 70,328,315,002.30
  5. Step 5: Solve for x
    x = 70,328,315,002.30/318,448.43
  6. Step 6: Final answer
    x = 220,846.80

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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.