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Finding the Fourth Proportional to 377,705.76, 521,215.20 and 207,936.24

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Solution

The fourth proportional to 377,705.76, 521,215.20 and 207,936.24 is: 286,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,705.76 : 521,215.20 = 207,936.24 : x
  2. Step 2: Convert to fraction form
    377,705.76/521,215.20 = 207,936.24/x
  3. Step 3: Cross multiply
    377,705.76x = 521,215.20 × 207,936.24
  4. Step 4: Simplify right side
    377,705.76x = 108,379,528,918.85
  5. Step 5: Solve for x
    x = 108,379,528,918.85/377,705.76
  6. Step 6: Final answer
    x = 286,941.69

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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.