Home / 427,402.98-640,538.19-227,292.48

Finding the Fourth Proportional to 427,402.98, 640,538.19 and 227,292.48

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Solution

The fourth proportional to 427,402.98, 640,538.19 and 227,292.48 is: 340,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,402.98 : 640,538.19 = 227,292.48 : x
  2. Step 2: Convert to fraction form
    427,402.98/640,538.19 = 227,292.48/x
  3. Step 3: Cross multiply
    427,402.98x = 640,538.19 × 227,292.48
  4. Step 4: Simplify right side
    427,402.98x = 145,589,513,739.81
  5. Step 5: Solve for x
    x = 145,589,513,739.81/427,402.98
  6. Step 6: Final answer
    x = 340,637.57

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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.