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Finding the Fourth Proportional to 395,248.86, 545,706.81 and 266,379

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Solution

The fourth proportional to 395,248.86, 545,706.81 and 266,379 is: 367,780.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,248.86 : 545,706.81 = 266,379 : x
  2. Step 2: Convert to fraction form
    395,248.86/545,706.81 = 266,379/x
  3. Step 3: Cross multiply
    395,248.86x = 545,706.81 × 266,379
  4. Step 4: Simplify right side
    395,248.86x = 145,364,834,340.99
  5. Step 5: Solve for x
    x = 145,364,834,340.99/395,248.86
  6. Step 6: Final answer
    x = 367,780.53

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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.