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Finding the Fourth Proportional to 319,072.78, 440,340.02 and 175,832.78

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Solution

The fourth proportional to 319,072.78, 440,340.02 and 175,832.78 is: 242,660.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,072.78 : 440,340.02 = 175,832.78 : x
  2. Step 2: Convert to fraction form
    319,072.78/440,340.02 = 175,832.78/x
  3. Step 3: Cross multiply
    319,072.78x = 440,340.02 × 175,832.78
  4. Step 4: Simplify right side
    319,072.78x = 77,426,211,402.29
  5. Step 5: Solve for x
    x = 77,426,211,402.29/319,072.78
  6. Step 6: Final answer
    x = 242,660.04

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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.