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Finding the Fourth Proportional to 409,004.34, 613,568.43 and 128,495.22

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Solution

The fourth proportional to 409,004.34, 613,568.43 and 128,495.22 is: 192,762.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,004.34 : 613,568.43 = 128,495.22 : x
  2. Step 2: Convert to fraction form
    409,004.34/613,568.43 = 128,495.22/x
  3. Step 3: Cross multiply
    409,004.34x = 613,568.43 × 128,495.22
  4. Step 4: Simplify right side
    409,004.34x = 78,840,610,397.90
  5. Step 5: Solve for x
    x = 78,840,610,397.90/409,004.34
  6. Step 6: Final answer
    x = 192,762.28

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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.