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Finding the Fourth Proportional to 217,370.82, 299,967.89 and 121,877.22

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Solution

The fourth proportional to 217,370.82, 299,967.89 and 121,877.22 is: 168,188.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,370.82 : 299,967.89 = 121,877.22 : x
  2. Step 2: Convert to fraction form
    217,370.82/299,967.89 = 121,877.22/x
  3. Step 3: Cross multiply
    217,370.82x = 299,967.89 × 121,877.22
  4. Step 4: Simplify right side
    217,370.82x = 36,559,252,522.47
  5. Step 5: Solve for x
    x = 36,559,252,522.47/217,370.82
  6. Step 6: Final answer
    x = 168,188.41

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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.