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Finding the Fourth Proportional to 345,879.87, 477,536.31 and 216,995.07

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Solution

The fourth proportional to 345,879.87, 477,536.31 and 216,995.07 is: 299,592.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,879.87 : 477,536.31 = 216,995.07 : x
  2. Step 2: Convert to fraction form
    345,879.87/477,536.31 = 216,995.07/x
  3. Step 3: Cross multiply
    345,879.87x = 477,536.31 × 216,995.07
  4. Step 4: Simplify right side
    345,879.87x = 103,623,025,015.99
  5. Step 5: Solve for x
    x = 103,623,025,015.99/345,879.87
  6. Step 6: Final answer
    x = 299,592.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.