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Finding the Fourth Proportional to 210,179.65, 290,054.92 and 114,691.59

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Solution

The fourth proportional to 210,179.65, 290,054.92 and 114,691.59 is: 158,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,179.65 : 290,054.92 = 114,691.59 : x
  2. Step 2: Convert to fraction form
    210,179.65/290,054.92 = 114,691.59/x
  3. Step 3: Cross multiply
    210,179.65x = 290,054.92 × 114,691.59
  4. Step 4: Simplify right side
    210,179.65x = 33,266,857,938.39
  5. Step 5: Solve for x
    x = 33,266,857,938.39/210,179.65
  6. Step 6: Final answer
    x = 158,278.21

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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.