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Finding the Fourth Proportional to 239,655.78, 359,571.15 and 139,797.36

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Solution

The fourth proportional to 239,655.78, 359,571.15 and 139,797.36 is: 209,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,655.78 : 359,571.15 = 139,797.36 : x
  2. Step 2: Convert to fraction form
    239,655.78/359,571.15 = 139,797.36/x
  3. Step 3: Cross multiply
    239,655.78x = 359,571.15 × 139,797.36
  4. Step 4: Simplify right side
    239,655.78x = 50,267,097,502.16
  5. Step 5: Solve for x
    x = 50,267,097,502.16/239,655.78
  6. Step 6: Final answer
    x = 209,747.07

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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.