Home / 285,513.81-394,008.75-156,455.43

Finding the Fourth Proportional to 285,513.81, 394,008.75 and 156,455.43

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Solution

The fourth proportional to 285,513.81, 394,008.75 and 156,455.43 is: 215,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,513.81 : 394,008.75 = 156,455.43 : x
  2. Step 2: Convert to fraction form
    285,513.81/394,008.75 = 156,455.43/x
  3. Step 3: Cross multiply
    285,513.81x = 394,008.75 × 156,455.43
  4. Step 4: Simplify right side
    285,513.81x = 61,644,808,405.01
  5. Step 5: Solve for x
    x = 61,644,808,405.01/285,513.81
  6. Step 6: Final answer
    x = 215,908.32

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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.