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Finding the Fourth Proportional to 285,862.80, 394,487.94 and 156,798.62

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Solution

The fourth proportional to 285,862.80, 394,487.94 and 156,798.62 is: 216,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,862.80 : 394,487.94 = 156,798.62 : x
  2. Step 2: Convert to fraction form
    285,862.80/394,487.94 = 156,798.62/x
  3. Step 3: Cross multiply
    285,862.80x = 394,487.94 × 156,798.62
  4. Step 4: Simplify right side
    285,862.80x = 61,855,164,598.64
  5. Step 5: Solve for x
    x = 61,855,164,598.64/285,862.80
  6. Step 6: Final answer
    x = 216,380.60

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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.