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Finding the Fourth Proportional to 312,365.16, 431,046.90 and 183,286.26

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Solution

The fourth proportional to 312,365.16, 431,046.90 and 183,286.26 is: 252,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,365.16 : 431,046.90 = 183,286.26 : x
  2. Step 2: Convert to fraction form
    312,365.16/431,046.90 = 183,286.26/x
  3. Step 3: Cross multiply
    312,365.16x = 431,046.90 × 183,286.26
  4. Step 4: Simplify right side
    312,365.16x = 79,004,974,185.59
  5. Step 5: Solve for x
    x = 79,004,974,185.59/312,365.16
  6. Step 6: Final answer
    x = 252,925.05

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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.