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Finding the Fourth Proportional to 438,951.65, 605,802.42 and 247,977.33

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Solution

The fourth proportional to 438,951.65, 605,802.42 and 247,977.33 is: 342,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,951.65 : 605,802.42 = 247,977.33 : x
  2. Step 2: Convert to fraction form
    438,951.65/605,802.42 = 247,977.33/x
  3. Step 3: Cross multiply
    438,951.65x = 605,802.42 × 247,977.33
  4. Step 4: Simplify right side
    438,951.65x = 150,225,266,619.14
  5. Step 5: Solve for x
    x = 150,225,266,619.14/438,951.65
  6. Step 6: Final answer
    x = 342,236.48

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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.