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Finding the Fourth Proportional to 283,048.40, 424,918.20 and 280,974.80

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Solution

The fourth proportional to 283,048.40, 424,918.20 and 280,974.80 is: 421,805.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,048.40 : 424,918.20 = 280,974.80 : x
  2. Step 2: Convert to fraction form
    283,048.40/424,918.20 = 280,974.80/x
  3. Step 3: Cross multiply
    283,048.40x = 424,918.20 × 280,974.80
  4. Step 4: Simplify right side
    283,048.40x = 119,391,306,261.36
  5. Step 5: Solve for x
    x = 119,391,306,261.36/283,048.40
  6. Step 6: Final answer
    x = 421,805.27

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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.