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Finding the Fourth Proportional to 438,968.28, 605,763.48 and 245,376.32

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Solution

The fourth proportional to 438,968.28, 605,763.48 and 245,376.32 is: 338,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,968.28 : 605,763.48 = 245,376.32 : x
  2. Step 2: Convert to fraction form
    438,968.28/605,763.48 = 245,376.32/x
  3. Step 3: Cross multiply
    438,968.28x = 605,763.48 × 245,376.32
  4. Step 4: Simplify right side
    438,968.28x = 148,640,013,512.79
  5. Step 5: Solve for x
    x = 148,640,013,512.79/438,968.28
  6. Step 6: Final answer
    x = 338,612.20

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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.