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Finding the Fourth Proportional to 171,623.40, 257,435.10 and 159,959.40

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Solution

The fourth proportional to 171,623.40, 257,435.10 and 159,959.40 is: 239,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,623.40 : 257,435.10 = 159,959.40 : x
  2. Step 2: Convert to fraction form
    171,623.40/257,435.10 = 159,959.40/x
  3. Step 3: Cross multiply
    171,623.40x = 257,435.10 × 159,959.40
  4. Step 4: Simplify right side
    171,623.40x = 41,179,164,134.94
  5. Step 5: Solve for x
    x = 41,179,164,134.94/171,623.40
  6. Step 6: Final answer
    x = 239,939.10

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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.