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Finding the Fourth Proportional to 217,362.96, 299,928.42 and 124,221.78

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Solution

The fourth proportional to 217,362.96, 299,928.42 and 124,221.78 is: 171,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,362.96 : 299,928.42 = 124,221.78 : x
  2. Step 2: Convert to fraction form
    217,362.96/299,928.42 = 124,221.78/x
  3. Step 3: Cross multiply
    217,362.96x = 299,928.42 × 124,221.78
  4. Step 4: Simplify right side
    217,362.96x = 37,257,642,204.99
  5. Step 5: Solve for x
    x = 37,257,642,204.99/217,362.96
  6. Step 6: Final answer
    x = 171,407.50

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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.