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Finding the Fourth Proportional to 285,999.84, 394,673.04 and 158,672.16

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Solution

The fourth proportional to 285,999.84, 394,673.04 and 158,672.16 is: 218,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,999.84 : 394,673.04 = 158,672.16 : x
  2. Step 2: Convert to fraction form
    285,999.84/394,673.04 = 158,672.16/x
  3. Step 3: Cross multiply
    285,999.84x = 394,673.04 × 158,672.16
  4. Step 4: Simplify right side
    285,999.84x = 62,623,623,750.57
  5. Step 5: Solve for x
    x = 62,623,623,750.57/285,999.84
  6. Step 6: Final answer
    x = 218,963.84

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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.