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Finding the Fourth Proportional to 291,945.20, 437,572.20 and 123,465.20

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Solution

The fourth proportional to 291,945.20, 437,572.20 and 123,465.20 is: 185,051.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,945.20 : 437,572.20 = 123,465.20 : x
  2. Step 2: Convert to fraction form
    291,945.20/437,572.20 = 123,465.20/x
  3. Step 3: Cross multiply
    291,945.20x = 437,572.20 × 123,465.20
  4. Step 4: Simplify right side
    291,945.20x = 54,024,939,187.44
  5. Step 5: Solve for x
    x = 54,024,939,187.44/291,945.20
  6. Step 6: Final answer
    x = 185,051.64

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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.