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Finding the Fourth Proportional to 260,636.32, 391,071.12 and 149,828.32

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Solution

The fourth proportional to 260,636.32, 391,071.12 and 149,828.32 is: 224,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,636.32 : 391,071.12 = 149,828.32 : x
  2. Step 2: Convert to fraction form
    260,636.32/391,071.12 = 149,828.32/x
  3. Step 3: Cross multiply
    260,636.32x = 391,071.12 × 149,828.32
  4. Step 4: Simplify right side
    260,636.32x = 58,593,528,910.12
  5. Step 5: Solve for x
    x = 58,593,528,910.12/260,636.32
  6. Step 6: Final answer
    x = 224,809.53

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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.