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Finding the Fourth Proportional to 422,254.80, 633,490.20 and 297,838.80

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Solution

The fourth proportional to 422,254.80, 633,490.20 and 297,838.80 is: 446,834.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,254.80 : 633,490.20 = 297,838.80 : x
  2. Step 2: Convert to fraction form
    422,254.80/633,490.20 = 297,838.80/x
  3. Step 3: Cross multiply
    422,254.80x = 633,490.20 × 297,838.80
  4. Step 4: Simplify right side
    422,254.80x = 188,677,960,979.76
  5. Step 5: Solve for x
    x = 188,677,960,979.76/422,254.80
  6. Step 6: Final answer
    x = 446,834.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.