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Finding the Fourth Proportional to 358,801.80, 495,109.26 and 220,958.80

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Solution

The fourth proportional to 358,801.80, 495,109.26 and 220,958.80 is: 304,900.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,801.80 : 495,109.26 = 220,958.80 : x
  2. Step 2: Convert to fraction form
    358,801.80/495,109.26 = 220,958.80/x
  3. Step 3: Cross multiply
    358,801.80x = 495,109.26 × 220,958.80
  4. Step 4: Simplify right side
    358,801.80x = 109,398,747,958.49
  5. Step 5: Solve for x
    x = 109,398,747,958.49/358,801.80
  6. Step 6: Final answer
    x = 304,900.22

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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.