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Finding the Fourth Proportional to 229,315.70, 343,973.55 and 220,130.30

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Solution

The fourth proportional to 229,315.70, 343,973.55 and 220,130.30 is: 330,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,315.70 : 343,973.55 = 220,130.30 : x
  2. Step 2: Convert to fraction form
    229,315.70/343,973.55 = 220,130.30/x
  3. Step 3: Cross multiply
    229,315.70x = 343,973.55 × 220,130.30
  4. Step 4: Simplify right side
    229,315.70x = 75,719,000,753.57
  5. Step 5: Solve for x
    x = 75,719,000,753.57/229,315.70
  6. Step 6: Final answer
    x = 330,195.45

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1.5x scale

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.