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Finding the Fourth Proportional to 297,053.20, 445,579.80 and 157,085.20

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Solution

The fourth proportional to 297,053.20, 445,579.80 and 157,085.20 is: 235,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,053.20 : 445,579.80 = 157,085.20 : x
  2. Step 2: Convert to fraction form
    297,053.20/445,579.80 = 157,085.20/x
  3. Step 3: Cross multiply
    297,053.20x = 445,579.80 × 157,085.20
  4. Step 4: Simplify right side
    297,053.20x = 69,993,991,998.96
  5. Step 5: Solve for x
    x = 69,993,991,998.96/297,053.20
  6. Step 6: Final answer
    x = 235,627.80

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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.