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Finding the Fourth Proportional to 438,682, 605,352.10 and 254,904.20

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Solution

The fourth proportional to 438,682, 605,352.10 and 254,904.20 is: 351,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,682 : 605,352.10 = 254,904.20 : x
  2. Step 2: Convert to fraction form
    438,682/605,352.10 = 254,904.20/x
  3. Step 3: Cross multiply
    438,682x = 605,352.10 × 254,904.20
  4. Step 4: Simplify right side
    438,682x = 154,306,792,768.82
  5. Step 5: Solve for x
    x = 154,306,792,768.82/438,682
  6. Step 6: Final answer
    x = 351,750.91

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1.5x scale

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.