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Finding the Fourth Proportional to 229,215.20, 343,822.80 and 130,911.20

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Solution

The fourth proportional to 229,215.20, 343,822.80 and 130,911.20 is: 196,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,215.20 : 343,822.80 = 130,911.20 : x
  2. Step 2: Convert to fraction form
    229,215.20/343,822.80 = 130,911.20/x
  3. Step 3: Cross multiply
    229,215.20x = 343,822.80 × 130,911.20
  4. Step 4: Simplify right side
    229,215.20x = 45,010,255,335.36
  5. Step 5: Solve for x
    x = 45,010,255,335.36/229,215.20
  6. Step 6: Final answer
    x = 196,366.80

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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.