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Finding the Fourth Proportional to 208,523.03, 287,642.63 and 123,609.11

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Solution

The fourth proportional to 208,523.03, 287,642.63 and 123,609.11 is: 170,509.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,523.03 : 287,642.63 = 123,609.11 : x
  2. Step 2: Convert to fraction form
    208,523.03/287,642.63 = 123,609.11/x
  3. Step 3: Cross multiply
    208,523.03x = 287,642.63 × 123,609.11
  4. Step 4: Simplify right side
    208,523.03x = 35,555,248,363.17
  5. Step 5: Solve for x
    x = 35,555,248,363.17/208,523.03
  6. Step 6: Final answer
    x = 170,509.94

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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.