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Finding the Fourth Proportional to 297,633.80, 446,522.70 and 87,278.60

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Solution

The fourth proportional to 297,633.80, 446,522.70 and 87,278.60 is: 130,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,633.80 : 446,522.70 = 87,278.60 : x
  2. Step 2: Convert to fraction form
    297,633.80/446,522.70 = 87,278.60/x
  3. Step 3: Cross multiply
    297,633.80x = 446,522.70 × 87,278.60
  4. Step 4: Simplify right side
    297,633.80x = 38,971,876,124.22
  5. Step 5: Solve for x
    x = 38,971,876,124.22/297,633.80
  6. Step 6: Final answer
    x = 130,939.01

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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.