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Finding the Fourth Proportional to 216,894.96, 299,311.56 and 121,401.36

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Solution

The fourth proportional to 216,894.96, 299,311.56 and 121,401.36 is: 167,531.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,894.96 : 299,311.56 = 121,401.36 : x
  2. Step 2: Convert to fraction form
    216,894.96/299,311.56 = 121,401.36/x
  3. Step 3: Cross multiply
    216,894.96x = 299,311.56 × 121,401.36
  4. Step 4: Simplify right side
    216,894.96x = 36,336,830,447.72
  5. Step 5: Solve for x
    x = 36,336,830,447.72/216,894.96
  6. Step 6: Final answer
    x = 167,531.93

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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.