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Finding the Fourth Proportional to 260,907.66, 391,398.44 and 83,373.17

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Solution

The fourth proportional to 260,907.66, 391,398.44 and 83,373.17 is: 125,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,907.66 : 391,398.44 = 83,373.17 : x
  2. Step 2: Convert to fraction form
    260,907.66/391,398.44 = 83,373.17/x
  3. Step 3: Cross multiply
    260,907.66x = 391,398.44 × 83,373.17
  4. Step 4: Simplify right side
    260,907.66x = 32,632,126,302.00
  5. Step 5: Solve for x
    x = 32,632,126,302.00/260,907.66
  6. Step 6: Final answer
    x = 125,071.55

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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.