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Finding the Fourth Proportional to 144,940.64, 217,411.60 and 39,760.80

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Solution

The fourth proportional to 144,940.64, 217,411.60 and 39,760.80 is: 59,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,940.64 : 217,411.60 = 39,760.80 : x
  2. Step 2: Convert to fraction form
    144,940.64/217,411.60 = 39,760.80/x
  3. Step 3: Cross multiply
    144,940.64x = 217,411.60 × 39,760.80
  4. Step 4: Simplify right side
    144,940.64x = 8,644,459,145.28
  5. Step 5: Solve for x
    x = 8,644,459,145.28/144,940.64
  6. Step 6: Final answer
    x = 59,641.38

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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.