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Finding the Fourth Proportional to 297,691.40, 446,594.70 and 87,336.20

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Solution

The fourth proportional to 297,691.40, 446,594.70 and 87,336.20 is: 131,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,691.40 : 446,594.70 = 87,336.20 : x
  2. Step 2: Convert to fraction form
    297,691.40/446,594.70 = 87,336.20/x
  3. Step 3: Cross multiply
    297,691.40x = 446,594.70 × 87,336.20
  4. Step 4: Simplify right side
    297,691.40x = 39,003,884,038.14
  5. Step 5: Solve for x
    x = 39,003,884,038.14/297,691.40
  6. Step 6: Final answer
    x = 131,021.20

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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.