Home / 312,931.53-431,837.87-169,687.89

Finding the Fourth Proportional to 312,931.53, 431,837.87 and 169,687.89

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Solution

The fourth proportional to 312,931.53, 431,837.87 and 169,687.89 is: 234,165.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,931.53 : 431,837.87 = 169,687.89 : x
  2. Step 2: Convert to fraction form
    312,931.53/431,837.87 = 169,687.89/x
  3. Step 3: Cross multiply
    312,931.53x = 431,837.87 × 169,687.89
  4. Step 4: Simplify right side
    312,931.53x = 73,277,656,133.95
  5. Step 5: Solve for x
    x = 73,277,656,133.95/312,931.53
  6. Step 6: Final answer
    x = 234,165.14

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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.