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Finding the Fourth Proportional to 285,370.74, 393,806.79 and 158,043.60

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Solution

The fourth proportional to 285,370.74, 393,806.79 and 158,043.60 is: 218,097.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,370.74 : 393,806.79 = 158,043.60 : x
  2. Step 2: Convert to fraction form
    285,370.74/393,806.79 = 158,043.60/x
  3. Step 3: Cross multiply
    285,370.74x = 393,806.79 × 158,043.60
  4. Step 4: Simplify right side
    285,370.74x = 62,238,642,796.04
  5. Step 5: Solve for x
    x = 62,238,642,796.04/285,370.74
  6. Step 6: Final answer
    x = 218,097.49

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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.