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Finding the Fourth Proportional to 286,679.88, 427,601 and 248,943.20

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Solution

The fourth proportional to 286,679.88, 427,601 and 248,943.20 is: 371,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,679.88 : 427,601 = 248,943.20 : x
  2. Step 2: Convert to fraction form
    286,679.88/427,601 = 248,943.20/x
  3. Step 3: Cross multiply
    286,679.88x = 427,601 × 248,943.20
  4. Step 4: Simplify right side
    286,679.88x = 106,448,361,263.20
  5. Step 5: Solve for x
    x = 106,448,361,263.20/286,679.88
  6. Step 6: Final answer
    x = 371,314.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.