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Finding the Fourth Proportional to 297,671.40, 446,564.70 and 87,316.20

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Solution

The fourth proportional to 297,671.40, 446,564.70 and 87,316.20 is: 130,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,671.40 : 446,564.70 = 87,316.20 : x
  2. Step 2: Convert to fraction form
    297,671.40/446,564.70 = 87,316.20/x
  3. Step 3: Cross multiply
    297,671.40x = 446,564.70 × 87,316.20
  4. Step 4: Simplify right side
    297,671.40x = 38,992,332,658.14
  5. Step 5: Solve for x
    x = 38,992,332,658.14/297,671.40
  6. Step 6: Final answer
    x = 130,991.20

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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.