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Finding the Fourth Proportional to 312,767.64, 431,621.64 and 169,528.71

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Solution

The fourth proportional to 312,767.64, 431,621.64 and 169,528.71 is: 233,950.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,767.64 : 431,621.64 = 169,528.71 : x
  2. Step 2: Convert to fraction form
    312,767.64/431,621.64 = 169,528.71/x
  3. Step 3: Cross multiply
    312,767.64x = 431,621.64 × 169,528.71
  4. Step 4: Simplify right side
    312,767.64x = 73,172,259,837.28
  5. Step 5: Solve for x
    x = 73,172,259,837.28/312,767.64
  6. Step 6: Final answer
    x = 233,950.86

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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.