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Finding the Fourth Proportional to 285,938.73, 394,642.74 and 158,655.33

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Solution

The fourth proportional to 285,938.73, 394,642.74 and 158,655.33 is: 218,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,938.73 : 394,642.74 = 158,655.33 : x
  2. Step 2: Convert to fraction form
    285,938.73/394,642.74 = 158,655.33/x
  3. Step 3: Cross multiply
    285,938.73x = 394,642.74 × 158,655.33
  4. Step 4: Simplify right side
    285,938.73x = 62,612,174,146.80
  5. Step 5: Solve for x
    x = 62,612,174,146.80/285,938.73
  6. Step 6: Final answer
    x = 218,970.60

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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.