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Finding the Fourth Proportional to 561,261.17, 774,540.25 and 303,138.10

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Solution

The fourth proportional to 561,261.17, 774,540.25 and 303,138.10 is: 418,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,261.17 : 774,540.25 = 303,138.10 : x
  2. Step 2: Convert to fraction form
    561,261.17/774,540.25 = 303,138.10/x
  3. Step 3: Cross multiply
    561,261.17x = 774,540.25 × 303,138.10
  4. Step 4: Simplify right side
    561,261.17x = 234,792,658,242.83
  5. Step 5: Solve for x
    x = 234,792,658,242.83/561,261.17
  6. Step 6: Final answer
    x = 418,330.49

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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.