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Finding the Fourth Proportional to 395,640.41, 545,441.50 and 250,373.93

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Solution

The fourth proportional to 395,640.41, 545,441.50 and 250,373.93 is: 345,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,640.41 : 545,441.50 = 250,373.93 : x
  2. Step 2: Convert to fraction form
    395,640.41/545,441.50 = 250,373.93/x
  3. Step 3: Cross multiply
    395,640.41x = 545,441.50 × 250,373.93
  4. Step 4: Simplify right side
    395,640.41x = 136,564,333,616.67
  5. Step 5: Solve for x
    x = 136,564,333,616.67/395,640.41
  6. Step 6: Final answer
    x = 345,172.86

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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.