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Finding the Fourth Proportional to 229,287.70, 343,931.55 and 220,102.30

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Solution

The fourth proportional to 229,287.70, 343,931.55 and 220,102.30 is: 330,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,287.70 : 343,931.55 = 220,102.30 : x
  2. Step 2: Convert to fraction form
    229,287.70/343,931.55 = 220,102.30/x
  3. Step 3: Cross multiply
    229,287.70x = 343,931.55 × 220,102.30
  4. Step 4: Simplify right side
    229,287.70x = 75,700,125,197.57
  5. Step 5: Solve for x
    x = 75,700,125,197.57/229,287.70
  6. Step 6: Final answer
    x = 330,153.45

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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.