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Finding the Fourth Proportional to 144,612.86, 216,912.90 and 39,431.84

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Solution

The fourth proportional to 144,612.86, 216,912.90 and 39,431.84 is: 59,146.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,612.86 : 216,912.90 = 39,431.84 : x
  2. Step 2: Convert to fraction form
    144,612.86/216,912.90 = 39,431.84/x
  3. Step 3: Cross multiply
    144,612.86x = 216,912.90 × 39,431.84
  4. Step 4: Simplify right side
    144,612.86x = 8,553,274,766.74
  5. Step 5: Solve for x
    x = 8,553,274,766.74/144,612.86
  6. Step 6: Final answer
    x = 59,146.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.