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Finding the Fourth Proportional to 217,490.68, 300,021.14 and 126,813.56

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Solution

The fourth proportional to 217,490.68, 300,021.14 and 126,813.56 is: 174,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,490.68 : 300,021.14 = 126,813.56 : x
  2. Step 2: Convert to fraction form
    217,490.68/300,021.14 = 126,813.56/x
  3. Step 3: Cross multiply
    217,490.68x = 300,021.14 × 126,813.56
  4. Step 4: Simplify right side
    217,490.68x = 38,046,748,838.66
  5. Step 5: Solve for x
    x = 38,046,748,838.66/217,490.68
  6. Step 6: Final answer
    x = 174,935.08

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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.