Home / 257,243.72-355,009.50-155,267.75

Finding the Fourth Proportional to 257,243.72, 355,009.50 and 155,267.75

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Solution

The fourth proportional to 257,243.72, 355,009.50 and 155,267.75 is: 214,277.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,243.72 : 355,009.50 = 155,267.75 : x
  2. Step 2: Convert to fraction form
    257,243.72/355,009.50 = 155,267.75/x
  3. Step 3: Cross multiply
    257,243.72x = 355,009.50 × 155,267.75
  4. Step 4: Simplify right side
    257,243.72x = 55,121,527,181.15
  5. Step 5: Solve for x
    x = 55,121,527,181.15/257,243.72
  6. Step 6: Final answer
    x = 214,277.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.