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Finding the Fourth Proportional to 213,517.78, 294,643.02 and 118,018.78

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Solution

The fourth proportional to 213,517.78, 294,643.02 and 118,018.78 is: 162,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,517.78 : 294,643.02 = 118,018.78 : x
  2. Step 2: Convert to fraction form
    213,517.78/294,643.02 = 118,018.78/x
  3. Step 3: Cross multiply
    213,517.78x = 294,643.02 × 118,018.78
  4. Step 4: Simplify right side
    213,517.78x = 34,773,409,755.92
  5. Step 5: Solve for x
    x = 34,773,409,755.92/213,517.78
  6. Step 6: Final answer
    x = 162,859.55

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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.