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Finding the Fourth Proportional to 291,855.43, 437,784.36 and 81,492.76

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Solution

The fourth proportional to 291,855.43, 437,784.36 and 81,492.76 is: 122,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,855.43 : 437,784.36 = 81,492.76 : x
  2. Step 2: Convert to fraction form
    291,855.43/437,784.36 = 81,492.76/x
  3. Step 3: Cross multiply
    291,855.43x = 437,784.36 × 81,492.76
  4. Step 4: Simplify right side
    291,855.43x = 35,676,255,781.23
  5. Step 5: Solve for x
    x = 35,676,255,781.23/291,855.43
  6. Step 6: Final answer
    x = 122,239.48

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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.