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Finding the Fourth Proportional to 222,141.13, 306,235.91 and 158,368.21

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Solution

The fourth proportional to 222,141.13, 306,235.91 and 158,368.21 is: 218,320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,141.13 : 306,235.91 = 158,368.21 : x
  2. Step 2: Convert to fraction form
    222,141.13/306,235.91 = 158,368.21/x
  3. Step 3: Cross multiply
    222,141.13x = 306,235.91 × 158,368.21
  4. Step 4: Simplify right side
    222,141.13x = 48,498,030,581.40
  5. Step 5: Solve for x
    x = 48,498,030,581.40/222,141.13
  6. Step 6: Final answer
    x = 218,320.81

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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.