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Finding the Fourth Proportional to 291,960.60, 437,940.90 and 259,301.40

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Solution

The fourth proportional to 291,960.60, 437,940.90 and 259,301.40 is: 388,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,960.60 : 437,940.90 = 259,301.40 : x
  2. Step 2: Convert to fraction form
    291,960.60/437,940.90 = 259,301.40/x
  3. Step 3: Cross multiply
    291,960.60x = 437,940.90 × 259,301.40
  4. Step 4: Simplify right side
    291,960.60x = 113,558,688,487.26
  5. Step 5: Solve for x
    x = 113,558,688,487.26/291,960.60
  6. Step 6: Final answer
    x = 388,952.10

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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.