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Finding the Fourth Proportional to 285,602.88, 394,122.06 and 158,290.32

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Solution

The fourth proportional to 285,602.88, 394,122.06 and 158,290.32 is: 218,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,602.88 : 394,122.06 = 158,290.32 : x
  2. Step 2: Convert to fraction form
    285,602.88/394,122.06 = 158,290.32/x
  3. Step 3: Cross multiply
    285,602.88x = 394,122.06 × 158,290.32
  4. Step 4: Simplify right side
    285,602.88x = 62,385,706,996.46
  5. Step 5: Solve for x
    x = 62,385,706,996.46/285,602.88
  6. Step 6: Final answer
    x = 218,435.15

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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.