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Finding the Fourth Proportional to 291,385.08, 437,102.38 and 81,023.02

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Solution

The fourth proportional to 291,385.08, 437,102.38 and 81,023.02 is: 121,541.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,385.08 : 437,102.38 = 81,023.02 : x
  2. Step 2: Convert to fraction form
    291,385.08/437,102.38 = 81,023.02/x
  3. Step 3: Cross multiply
    291,385.08x = 437,102.38 × 81,023.02
  4. Step 4: Simplify right side
    291,385.08x = 35,415,354,876.79
  5. Step 5: Solve for x
    x = 35,415,354,876.79/291,385.08
  6. Step 6: Final answer
    x = 121,541.41

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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.