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Finding the Fourth Proportional to 290,603.17, 435,726.43 and 112,902.73

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Solution

The fourth proportional to 290,603.17, 435,726.43 and 112,902.73 is: 169,284.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,603.17 : 435,726.43 = 112,902.73 : x
  2. Step 2: Convert to fraction form
    290,603.17/435,726.43 = 112,902.73/x
  3. Step 3: Cross multiply
    290,603.17x = 435,726.43 × 112,902.73
  4. Step 4: Simplify right side
    290,603.17x = 49,194,703,480.15
  5. Step 5: Solve for x
    x = 49,194,703,480.15/290,603.17
  6. Step 6: Final answer
    x = 169,284.81

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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.