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Finding the Fourth Proportional to 291,029.20, 436,313.40 and 159,701.20

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Solution

The fourth proportional to 291,029.20, 436,313.40 and 159,701.20 is: 239,425.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,029.20 : 436,313.40 = 159,701.20 : x
  2. Step 2: Convert to fraction form
    291,029.20/436,313.40 = 159,701.20/x
  3. Step 3: Cross multiply
    291,029.20x = 436,313.40 × 159,701.20
  4. Step 4: Simplify right side
    291,029.20x = 69,679,773,556.08
  5. Step 5: Solve for x
    x = 69,679,773,556.08/291,029.20
  6. Step 6: Final answer
    x = 239,425.37

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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.