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Finding the Fourth Proportional to 209,058.66, 288,501.71 and 123,020.97

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Solution

The fourth proportional to 209,058.66, 288,501.71 and 123,020.97 is: 169,769.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,058.66 : 288,501.71 = 123,020.97 : x
  2. Step 2: Convert to fraction form
    209,058.66/288,501.71 = 123,020.97/x
  3. Step 3: Cross multiply
    209,058.66x = 288,501.71 × 123,020.97
  4. Step 4: Simplify right side
    209,058.66x = 35,491,759,595.75
  5. Step 5: Solve for x
    x = 35,491,759,595.75/209,058.66
  6. Step 6: Final answer
    x = 169,769.38

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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.