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Finding the Fourth Proportional to 171,047.80, 256,878.90 and 165,518.20

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Solution

The fourth proportional to 171,047.80, 256,878.90 and 165,518.20 is: 248,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,047.80 : 256,878.90 = 165,518.20 : x
  2. Step 2: Convert to fraction form
    171,047.80/256,878.90 = 165,518.20/x
  3. Step 3: Cross multiply
    171,047.80x = 256,878.90 × 165,518.20
  4. Step 4: Simplify right side
    171,047.80x = 42,518,133,145.98
  5. Step 5: Solve for x
    x = 42,518,133,145.98/171,047.80
  6. Step 6: Final answer
    x = 248,574.57

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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.