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Finding the Fourth Proportional to 291,095.48, 436,643.20 and 80,733.42

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Solution

The fourth proportional to 291,095.48, 436,643.20 and 80,733.42 is: 121,100.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,095.48 : 436,643.20 = 80,733.42 : x
  2. Step 2: Convert to fraction form
    291,095.48/436,643.20 = 80,733.42/x
  3. Step 3: Cross multiply
    291,095.48x = 436,643.20 × 80,733.42
  4. Step 4: Simplify right side
    291,095.48x = 35,251,698,855.74
  5. Step 5: Solve for x
    x = 35,251,698,855.74/291,095.48
  6. Step 6: Final answer
    x = 121,100.12

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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.