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Finding the Fourth Proportional to 285,703.90, 394,244.86 and 158,368.66

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Solution

The fourth proportional to 285,703.90, 394,244.86 and 158,368.66 is: 218,534.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,703.90 : 394,244.86 = 158,368.66 : x
  2. Step 2: Convert to fraction form
    285,703.90/394,244.86 = 158,368.66/x
  3. Step 3: Cross multiply
    285,703.90x = 394,244.86 × 158,368.66
  4. Step 4: Simplify right side
    285,703.90x = 62,436,030,190.09
  5. Step 5: Solve for x
    x = 62,436,030,190.09/285,703.90
  6. Step 6: Final answer
    x = 218,534.05

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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.