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Finding the Fourth Proportional to 171,358.56, 257,047.38 and 53,020.65

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Solution

The fourth proportional to 171,358.56, 257,047.38 and 53,020.65 is: 79,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,358.56 : 257,047.38 = 53,020.65 : x
  2. Step 2: Convert to fraction form
    171,358.56/257,047.38 = 53,020.65/x
  3. Step 3: Cross multiply
    171,358.56x = 257,047.38 × 53,020.65
  4. Step 4: Simplify right side
    171,358.56x = 13,628,819,168.40
  5. Step 5: Solve for x
    x = 13,628,819,168.40/171,358.56
  6. Step 6: Final answer
    x = 79,533.93

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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.