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Finding the Fourth Proportional to 261,032.40, 391,591.80 and 111,344.40

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Solution

The fourth proportional to 261,032.40, 391,591.80 and 111,344.40 is: 167,035.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,032.40 : 391,591.80 = 111,344.40 : x
  2. Step 2: Convert to fraction form
    261,032.40/391,591.80 = 111,344.40/x
  3. Step 3: Cross multiply
    261,032.40x = 391,591.80 × 111,344.40
  4. Step 4: Simplify right side
    261,032.40x = 43,601,554,015.92
  5. Step 5: Solve for x
    x = 43,601,554,015.92/261,032.40
  6. Step 6: Final answer
    x = 167,035.03

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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.