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Finding the Fourth Proportional to 261,290.32, 360,645.96 and 160,630

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Solution

The fourth proportional to 261,290.32, 360,645.96 and 160,630 is: 221,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,290.32 : 360,645.96 = 160,630 : x
  2. Step 2: Convert to fraction form
    261,290.32/360,645.96 = 160,630/x
  3. Step 3: Cross multiply
    261,290.32x = 360,645.96 × 160,630
  4. Step 4: Simplify right side
    261,290.32x = 57,930,560,554.80
  5. Step 5: Solve for x
    x = 57,930,560,554.80/261,290.32
  6. Step 6: Final answer
    x = 221,709.55

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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.