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Finding the Fourth Proportional to 318,295.20, 439,256.58 and 175,064.43

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Solution

The fourth proportional to 318,295.20, 439,256.58 and 175,064.43 is: 241,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,295.20 : 439,256.58 = 175,064.43 : x
  2. Step 2: Convert to fraction form
    318,295.20/439,256.58 = 175,064.43/x
  3. Step 3: Cross multiply
    318,295.20x = 439,256.58 × 175,064.43
  4. Step 4: Simplify right side
    318,295.20x = 76,898,202,801.45
  5. Step 5: Solve for x
    x = 76,898,202,801.45/318,295.20
  6. Step 6: Final answer
    x = 241,593.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.