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Finding the Fourth Proportional to 285,859.80, 394,483.80 and 156,795.62

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Solution

The fourth proportional to 285,859.80, 394,483.80 and 156,795.62 is: 216,376.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,859.80 : 394,483.80 = 156,795.62 : x
  2. Step 2: Convert to fraction form
    285,859.80/394,483.80 = 156,795.62/x
  3. Step 3: Cross multiply
    285,859.80x = 394,483.80 × 156,795.62
  4. Step 4: Simplify right side
    285,859.80x = 61,853,332,000.96
  5. Step 5: Solve for x
    x = 61,853,332,000.96/285,859.80
  6. Step 6: Final answer
    x = 216,376.46

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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.