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Finding the Fourth Proportional to 285,980.32, 394,621.20 and 158,624.16

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Solution

The fourth proportional to 285,980.32, 394,621.20 and 158,624.16 is: 218,883.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,980.32 : 394,621.20 = 158,624.16 : x
  2. Step 2: Convert to fraction form
    285,980.32/394,621.20 = 158,624.16/x
  3. Step 3: Cross multiply
    285,980.32x = 394,621.20 × 158,624.16
  4. Step 4: Simplify right side
    285,980.32x = 62,596,456,368.19
  5. Step 5: Solve for x
    x = 62,596,456,368.19/285,980.32
  6. Step 6: Final answer
    x = 218,883.79

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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.