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Finding the Fourth Proportional to 319,515.93, 440,933.46 and 176,275.92

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Solution

The fourth proportional to 319,515.93, 440,933.46 and 176,275.92 is: 243,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,515.93 : 440,933.46 = 176,275.92 : x
  2. Step 2: Convert to fraction form
    319,515.93/440,933.46 = 176,275.92/x
  3. Step 3: Cross multiply
    319,515.93x = 440,933.46 × 176,275.92
  4. Step 4: Simplify right side
    319,515.93x = 77,725,951,320.28
  5. Step 5: Solve for x
    x = 77,725,951,320.28/319,515.93
  6. Step 6: Final answer
    x = 243,261.58

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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.