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Finding the Fourth Proportional to 345,346.88, 517,450.08 and 157,945.28

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Solution

The fourth proportional to 345,346.88, 517,450.08 and 157,945.28 is: 236,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,346.88 : 517,450.08 = 157,945.28 : x
  2. Step 2: Convert to fraction form
    345,346.88/517,450.08 = 157,945.28/x
  3. Step 3: Cross multiply
    345,346.88x = 517,450.08 × 157,945.28
  4. Step 4: Simplify right side
    345,346.88x = 81,728,797,771.62
  5. Step 5: Solve for x
    x = 81,728,797,771.62/345,346.88
  6. Step 6: Final answer
    x = 236,657.12

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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.