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Finding the Fourth Proportional to 272,560.65, 408,859.20 and 92,643.45

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Solution

The fourth proportional to 272,560.65, 408,859.20 and 92,643.45 is: 138,971.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,560.65 : 408,859.20 = 92,643.45 : x
  2. Step 2: Convert to fraction form
    272,560.65/408,859.20 = 92,643.45/x
  3. Step 3: Cross multiply
    272,560.65x = 408,859.20 × 92,643.45
  4. Step 4: Simplify right side
    272,560.65x = 37,878,126,852.24
  5. Step 5: Solve for x
    x = 37,878,126,852.24/272,560.65
  6. Step 6: Final answer
    x = 138,971.37

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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.