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Finding the Fourth Proportional to 217,118.43, 299,588.56 and 136,488.87

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Solution

The fourth proportional to 217,118.43, 299,588.56 and 136,488.87 is: 188,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,118.43 : 299,588.56 = 136,488.87 : x
  2. Step 2: Convert to fraction form
    217,118.43/299,588.56 = 136,488.87/x
  3. Step 3: Cross multiply
    217,118.43x = 299,588.56 × 136,488.87
  4. Step 4: Simplify right side
    217,118.43x = 40,890,503,678.11
  5. Step 5: Solve for x
    x = 40,890,503,678.11/217,118.43
  6. Step 6: Final answer
    x = 188,332.72

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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.