Home / 284,107.40-392,135.30-163,318.74

Finding the Fourth Proportional to 284,107.40, 392,135.30 and 163,318.74

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Solution

The fourth proportional to 284,107.40, 392,135.30 and 163,318.74 is: 225,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,107.40 : 392,135.30 = 163,318.74 : x
  2. Step 2: Convert to fraction form
    284,107.40/392,135.30 = 163,318.74/x
  3. Step 3: Cross multiply
    284,107.40x = 392,135.30 × 163,318.74
  4. Step 4: Simplify right side
    284,107.40x = 64,043,042,288.93
  5. Step 5: Solve for x
    x = 64,043,042,288.93/284,107.40
  6. Step 6: Final answer
    x = 225,418.43

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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.