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Finding the Fourth Proportional to 259,205.40, 388,808.10 and 229,680.90

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Solution

The fourth proportional to 259,205.40, 388,808.10 and 229,680.90 is: 344,521.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,205.40 : 388,808.10 = 229,680.90 : x
  2. Step 2: Convert to fraction form
    259,205.40/388,808.10 = 229,680.90/x
  3. Step 3: Cross multiply
    259,205.40x = 388,808.10 × 229,680.90
  4. Step 4: Simplify right side
    259,205.40x = 89,301,794,335.29
  5. Step 5: Solve for x
    x = 89,301,794,335.29/259,205.40
  6. Step 6: Final answer
    x = 344,521.35

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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.