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Finding the Fourth Proportional to 217,141.45, 299,631.01 and 126,478.45

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Solution

The fourth proportional to 217,141.45, 299,631.01 and 126,478.45 is: 174,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,141.45 : 299,631.01 = 126,478.45 : x
  2. Step 2: Convert to fraction form
    217,141.45/299,631.01 = 126,478.45/x
  3. Step 3: Cross multiply
    217,141.45x = 299,631.01 × 126,478.45
  4. Step 4: Simplify right side
    217,141.45x = 37,896,865,716.73
  5. Step 5: Solve for x
    x = 37,896,865,716.73/217,141.45
  6. Step 6: Final answer
    x = 174,526.17

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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.