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Finding the Fourth Proportional to 291,287.78, 401,898.48 and 170,459

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Solution

The fourth proportional to 291,287.78, 401,898.48 and 170,459 is: 235,187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,287.78 : 401,898.48 = 170,459 : x
  2. Step 2: Convert to fraction form
    291,287.78/401,898.48 = 170,459/x
  3. Step 3: Cross multiply
    291,287.78x = 401,898.48 × 170,459
  4. Step 4: Simplify right side
    291,287.78x = 68,507,213,002.32
  5. Step 5: Solve for x
    x = 68,507,213,002.32/291,287.78
  6. Step 6: Final answer
    x = 235,187.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.