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Finding the Fourth Proportional to 297,812.40, 446,776.20 and 87,457.20

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Solution

The fourth proportional to 297,812.40, 446,776.20 and 87,457.20 is: 131,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,812.40 : 446,776.20 = 87,457.20 : x
  2. Step 2: Convert to fraction form
    297,812.40/446,776.20 = 87,457.20/x
  3. Step 3: Cross multiply
    297,812.40x = 446,776.20 × 87,457.20
  4. Step 4: Simplify right side
    297,812.40x = 39,073,795,478.64
  5. Step 5: Solve for x
    x = 39,073,795,478.64/297,812.40
  6. Step 6: Final answer
    x = 131,202.72

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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.