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Finding the Fourth Proportional to 318,423.72, 439,419.88 and 175,175.20

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Solution

The fourth proportional to 318,423.72, 439,419.88 and 175,175.20 is: 241,739.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,423.72 : 439,419.88 = 175,175.20 : x
  2. Step 2: Convert to fraction form
    318,423.72/439,419.88 = 175,175.20/x
  3. Step 3: Cross multiply
    318,423.72x = 439,419.88 × 175,175.20
  4. Step 4: Simplify right side
    318,423.72x = 76,975,465,362.98
  5. Step 5: Solve for x
    x = 76,975,465,362.98/318,423.72
  6. Step 6: Final answer
    x = 241,739.11

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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.