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Finding the Fourth Proportional to 203,875.80, 305,813.70 and 151,387.80

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Solution

The fourth proportional to 203,875.80, 305,813.70 and 151,387.80 is: 227,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,875.80 : 305,813.70 = 151,387.80 : x
  2. Step 2: Convert to fraction form
    203,875.80/305,813.70 = 151,387.80/x
  3. Step 3: Cross multiply
    203,875.80x = 305,813.70 × 151,387.80
  4. Step 4: Simplify right side
    203,875.80x = 46,296,463,252.86
  5. Step 5: Solve for x
    x = 46,296,463,252.86/203,875.80
  6. Step 6: Final answer
    x = 227,081.70

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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.