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Finding the Fourth Proportional to 285,751.15, 394,349.39 and 163,254.25

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Solution

The fourth proportional to 285,751.15, 394,349.39 and 163,254.25 is: 225,298.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,751.15 : 394,349.39 = 163,254.25 : x
  2. Step 2: Convert to fraction form
    285,751.15/394,349.39 = 163,254.25/x
  3. Step 3: Cross multiply
    285,751.15x = 394,349.39 × 163,254.25
  4. Step 4: Simplify right side
    285,751.15x = 64,379,212,338.80
  5. Step 5: Solve for x
    x = 64,379,212,338.80/285,751.15
  6. Step 6: Final answer
    x = 225,298.17

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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.