Home / 285,498.95-394,001.45-158,174.55

Finding the Fourth Proportional to 285,498.95, 394,001.45 and 158,174.55

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Solution

The fourth proportional to 285,498.95, 394,001.45 and 158,174.55 is: 218,288.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,498.95 : 394,001.45 = 158,174.55 : x
  2. Step 2: Convert to fraction form
    285,498.95/394,001.45 = 158,174.55/x
  3. Step 3: Cross multiply
    285,498.95x = 394,001.45 × 158,174.55
  4. Step 4: Simplify right side
    285,498.95x = 62,321,001,262.22
  5. Step 5: Solve for x
    x = 62,321,001,262.22/285,498.95
  6. Step 6: Final answer
    x = 218,288.03

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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.