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Finding the Fourth Proportional to 319,305.43, 440,632.06 and 176,065.44

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Solution

The fourth proportional to 319,305.43, 440,632.06 and 176,065.44 is: 242,965.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,305.43 : 440,632.06 = 176,065.44 : x
  2. Step 2: Convert to fraction form
    319,305.43/440,632.06 = 176,065.44/x
  3. Step 3: Cross multiply
    319,305.43x = 440,632.06 × 176,065.44
  4. Step 4: Simplify right side
    319,305.43x = 77,580,077,522.01
  5. Step 5: Solve for x
    x = 77,580,077,522.01/319,305.43
  6. Step 6: Final answer
    x = 242,965.11

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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.