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Finding the Fourth Proportional to 170,990.88, 256,487.52 and 52,663.20

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Solution

The fourth proportional to 170,990.88, 256,487.52 and 52,663.20 is: 78,995.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,990.88 : 256,487.52 = 52,663.20 : x
  2. Step 2: Convert to fraction form
    170,990.88/256,487.52 = 52,663.20/x
  3. Step 3: Cross multiply
    170,990.88x = 256,487.52 × 52,663.20
  4. Step 4: Simplify right side
    170,990.88x = 13,507,453,563.26
  5. Step 5: Solve for x
    x = 13,507,453,563.26/170,990.88
  6. Step 6: Final answer
    x = 78,995.17

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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.