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Finding the Fourth Proportional to 427,305.24, 640,760.25 and 157,365.24

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Solution

The fourth proportional to 427,305.24, 640,760.25 and 157,365.24 is: 235,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,305.24 : 640,760.25 = 157,365.24 : x
  2. Step 2: Convert to fraction form
    427,305.24/640,760.25 = 157,365.24/x
  3. Step 3: Cross multiply
    427,305.24x = 640,760.25 × 157,365.24
  4. Step 4: Simplify right side
    427,305.24x = 100,833,390,523.71
  5. Step 5: Solve for x
    x = 100,833,390,523.71/427,305.24
  6. Step 6: Final answer
    x = 235,975.09

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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.