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Finding the Fourth Proportional to 312,610.36, 431,402.54 and 183,523.56

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Solution

The fourth proportional to 312,610.36, 431,402.54 and 183,523.56 is: 253,262.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,610.36 : 431,402.54 = 183,523.56 : x
  2. Step 2: Convert to fraction form
    312,610.36/431,402.54 = 183,523.56/x
  3. Step 3: Cross multiply
    312,610.36x = 431,402.54 × 183,523.56
  4. Step 4: Simplify right side
    312,610.36x = 79,172,529,933.84
  5. Step 5: Solve for x
    x = 79,172,529,933.84/312,610.36
  6. Step 6: Final answer
    x = 253,262.66

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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.