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Finding the Fourth Proportional to 283,939.70, 425,909.55 and 266,443.70

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Solution

The fourth proportional to 283,939.70, 425,909.55 and 266,443.70 is: 399,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,939.70 : 425,909.55 = 266,443.70 : x
  2. Step 2: Convert to fraction form
    283,939.70/425,909.55 = 266,443.70/x
  3. Step 3: Cross multiply
    283,939.70x = 425,909.55 × 266,443.70
  4. Step 4: Simplify right side
    283,939.70x = 113,480,916,367.34
  5. Step 5: Solve for x
    x = 113,480,916,367.34/283,939.70
  6. Step 6: Final answer
    x = 399,665.55

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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.