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Finding the Fourth Proportional to 387,620.99, 534,959.59 and 222,064.69

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Solution

The fourth proportional to 387,620.99, 534,959.59 and 222,064.69 is: 306,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,620.99 : 534,959.59 = 222,064.69 : x
  2. Step 2: Convert to fraction form
    387,620.99/534,959.59 = 222,064.69/x
  3. Step 3: Cross multiply
    387,620.99x = 534,959.59 × 222,064.69
  4. Step 4: Simplify right side
    387,620.99x = 118,795,635,042.74
  5. Step 5: Solve for x
    x = 118,795,635,042.74/387,620.99
  6. Step 6: Final answer
    x = 306,473.69

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1.5x scale

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.