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Finding the Fourth Proportional to 222,315.90, 306,972.75 and 205,313.93

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Solution

The fourth proportional to 222,315.90, 306,972.75 and 205,313.93 is: 283,496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,315.90 : 306,972.75 = 205,313.93 : x
  2. Step 2: Convert to fraction form
    222,315.90/306,972.75 = 205,313.93/x
  3. Step 3: Cross multiply
    222,315.90x = 306,972.75 × 205,313.93
  4. Step 4: Simplify right side
    222,315.90x = 63,025,781,705.41
  5. Step 5: Solve for x
    x = 63,025,781,705.41/222,315.90
  6. Step 6: Final answer
    x = 283,496.51

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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.