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Finding the Fourth Proportional to 217,203.33, 299,752.47 and 121,740.78

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Solution

The fourth proportional to 217,203.33, 299,752.47 and 121,740.78 is: 168,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,203.33 : 299,752.47 = 121,740.78 : x
  2. Step 2: Convert to fraction form
    217,203.33/299,752.47 = 121,740.78/x
  3. Step 3: Cross multiply
    217,203.33x = 299,752.47 × 121,740.78
  4. Step 4: Simplify right side
    217,203.33x = 36,492,099,504.73
  5. Step 5: Solve for x
    x = 36,492,099,504.73/217,203.33
  6. Step 6: Final answer
    x = 168,008.93

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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.