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Finding the Fourth Proportional to 438,603.81, 605,287.91 and 268,805.13

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Solution

The fourth proportional to 438,603.81, 605,287.91 and 268,805.13 is: 370,960.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,603.81 : 605,287.91 = 268,805.13 : x
  2. Step 2: Convert to fraction form
    438,603.81/605,287.91 = 268,805.13/x
  3. Step 3: Cross multiply
    438,603.81x = 605,287.91 × 268,805.13
  4. Step 4: Simplify right side
    438,603.81x = 162,704,493,990.95
  5. Step 5: Solve for x
    x = 162,704,493,990.95/438,603.81
  6. Step 6: Final answer
    x = 370,960.06

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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.