Home / 285,939.40-394,590.18-158,612.20

Finding the Fourth Proportional to 285,939.40, 394,590.18 and 158,612.20

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Solution

The fourth proportional to 285,939.40, 394,590.18 and 158,612.20 is: 218,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,939.40 : 394,590.18 = 158,612.20 : x
  2. Step 2: Convert to fraction form
    285,939.40/394,590.18 = 158,612.20/x
  3. Step 3: Cross multiply
    285,939.40x = 394,590.18 × 158,612.20
  4. Step 4: Simplify right side
    285,939.40x = 62,586,816,548.20
  5. Step 5: Solve for x
    x = 62,586,816,548.20/285,939.40
  6. Step 6: Final answer
    x = 218,881.40

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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.