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Finding the Fourth Proportional to 268,887.78, 402,223.59 and 220,963.32

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Solution

The fourth proportional to 268,887.78, 402,223.59 and 220,963.32 is: 330,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,887.78 : 402,223.59 = 220,963.32 : x
  2. Step 2: Convert to fraction form
    268,887.78/402,223.59 = 220,963.32/x
  3. Step 3: Cross multiply
    268,887.78x = 402,223.59 × 220,963.32
  4. Step 4: Simplify right side
    268,887.78x = 88,876,659,828.72
  5. Step 5: Solve for x
    x = 88,876,659,828.72/268,887.78
  6. Step 6: Final answer
    x = 330,534.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.