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Finding the Fourth Proportional to 291,622.78, 437,606.40 and 123,132.20

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Solution

The fourth proportional to 291,622.78, 437,606.40 and 123,132.20 is: 184,771.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,622.78 : 437,606.40 = 123,132.20 : x
  2. Step 2: Convert to fraction form
    291,622.78/437,606.40 = 123,132.20/x
  3. Step 3: Cross multiply
    291,622.78x = 437,606.40 × 123,132.20
  4. Step 4: Simplify right side
    291,622.78x = 53,883,438,808.71
  5. Step 5: Solve for x
    x = 53,883,438,808.71/291,622.78
  6. Step 6: Final answer
    x = 184,771.02

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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.