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Finding the Fourth Proportional to 312,750.27, 431,584.88 and 185,350.23

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Solution

The fourth proportional to 312,750.27, 431,584.88 and 185,350.23 is: 255,777.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,750.27 : 431,584.88 = 185,350.23 : x
  2. Step 2: Convert to fraction form
    312,750.27/431,584.88 = 185,350.23/x
  3. Step 3: Cross multiply
    312,750.27x = 431,584.88 × 185,350.23
  4. Step 4: Simplify right side
    312,750.27x = 79,994,355,845.77
  5. Step 5: Solve for x
    x = 79,994,355,845.77/312,750.27
  6. Step 6: Final answer
    x = 255,777.10

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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.