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Finding the Fourth Proportional to 309,644.40, 427,348.80 and 182,331.84

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Solution

The fourth proportional to 309,644.40, 427,348.80 and 182,331.84 is: 251,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,644.40 : 427,348.80 = 182,331.84 : x
  2. Step 2: Convert to fraction form
    309,644.40/427,348.80 = 182,331.84/x
  3. Step 3: Cross multiply
    309,644.40x = 427,348.80 × 182,331.84
  4. Step 4: Simplify right side
    309,644.40x = 77,919,293,025.79
  5. Step 5: Solve for x
    x = 77,919,293,025.79/309,644.40
  6. Step 6: Final answer
    x = 251,641.21

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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.