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Finding the Fourth Proportional to 217,292.19, 299,862.15 and 121,798.89

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Solution

The fourth proportional to 217,292.19, 299,862.15 and 121,798.89 is: 168,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,292.19 : 299,862.15 = 121,798.89 : x
  2. Step 2: Convert to fraction form
    217,292.19/299,862.15 = 121,798.89/x
  3. Step 3: Cross multiply
    217,292.19x = 299,862.15 × 121,798.89
  4. Step 4: Simplify right side
    217,292.19x = 36,522,877,251.39
  5. Step 5: Solve for x
    x = 36,522,877,251.39/217,292.19
  6. Step 6: Final answer
    x = 168,081.86

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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.