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Finding the Fourth Proportional to 291,709.60, 437,564.40 and 197,231.20

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Solution

The fourth proportional to 291,709.60, 437,564.40 and 197,231.20 is: 295,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,709.60 : 437,564.40 = 197,231.20 : x
  2. Step 2: Convert to fraction form
    291,709.60/437,564.40 = 197,231.20/x
  3. Step 3: Cross multiply
    291,709.60x = 437,564.40 × 197,231.20
  4. Step 4: Simplify right side
    291,709.60x = 86,301,351,689.28
  5. Step 5: Solve for x
    x = 86,301,351,689.28/291,709.60
  6. Step 6: Final answer
    x = 295,846.80

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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.