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Finding the Fourth Proportional to 320,276.70, 441,695.55 and 265,742.52

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Solution

The fourth proportional to 320,276.70, 441,695.55 and 265,742.52 is: 366,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,276.70 : 441,695.55 = 265,742.52 : x
  2. Step 2: Convert to fraction form
    320,276.70/441,695.55 = 265,742.52/x
  3. Step 3: Cross multiply
    320,276.70x = 441,695.55 × 265,742.52
  4. Step 4: Simplify right side
    320,276.70x = 117,377,288,529.79
  5. Step 5: Solve for x
    x = 117,377,288,529.79/320,276.70
  6. Step 6: Final answer
    x = 366,487.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.