Home / 221,724.81-305,980.54-126,231.51

Finding the Fourth Proportional to 221,724.81, 305,980.54 and 126,231.51

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Solution

The fourth proportional to 221,724.81, 305,980.54 and 126,231.51 is: 174,199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,724.81 : 305,980.54 = 126,231.51 : x
  2. Step 2: Convert to fraction form
    221,724.81/305,980.54 = 126,231.51/x
  3. Step 3: Cross multiply
    221,724.81x = 305,980.54 × 126,231.51
  4. Step 4: Simplify right side
    221,724.81x = 38,624,386,426.66
  5. Step 5: Solve for x
    x = 38,624,386,426.66/221,724.81
  6. Step 6: Final answer
    x = 174,199.66

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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.