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Finding the Fourth Proportional to 217,881.76, 300,709.56 and 133,047.76

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Solution

The fourth proportional to 217,881.76, 300,709.56 and 133,047.76 is: 183,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,881.76 : 300,709.56 = 133,047.76 : x
  2. Step 2: Convert to fraction form
    217,881.76/300,709.56 = 133,047.76/x
  3. Step 3: Cross multiply
    217,881.76x = 300,709.56 × 133,047.76
  4. Step 4: Simplify right side
    217,881.76x = 40,008,733,368.59
  5. Step 5: Solve for x
    x = 40,008,733,368.59/217,881.76
  6. Step 6: Final answer
    x = 183,625.90

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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.