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Finding the Fourth Proportional to 207,530.71, 310,592.39 and 127,618.88

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Solution

The fourth proportional to 207,530.71, 310,592.39 and 127,618.88 is: 190,995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,530.71 : 310,592.39 = 127,618.88 : x
  2. Step 2: Convert to fraction form
    207,530.71/310,592.39 = 127,618.88/x
  3. Step 3: Cross multiply
    207,530.71x = 310,592.39 × 127,618.88
  4. Step 4: Simplify right side
    207,530.71x = 39,637,450,757.27
  5. Step 5: Solve for x
    x = 39,637,450,757.27/207,530.71
  6. Step 6: Final answer
    x = 190,995.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.