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Finding the Fourth Proportional to 208,424.32, 312,629.18 and 88,404.18

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Solution

The fourth proportional to 208,424.32, 312,629.18 and 88,404.18 is: 132,603.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,424.32 : 312,629.18 = 88,404.18 : x
  2. Step 2: Convert to fraction form
    208,424.32/312,629.18 = 88,404.18/x
  3. Step 3: Cross multiply
    208,424.32x = 312,629.18 × 88,404.18
  4. Step 4: Simplify right side
    208,424.32x = 27,637,726,301.97
  5. Step 5: Solve for x
    x = 27,637,726,301.97/208,424.32
  6. Step 6: Final answer
    x = 132,603.17

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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.