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Finding the Fourth Proportional to 375,392.79, 518,041.60 and 203,310.66

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Solution

The fourth proportional to 375,392.79, 518,041.60 and 203,310.66 is: 280,568.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,392.79 : 518,041.60 = 203,310.66 : x
  2. Step 2: Convert to fraction form
    375,392.79/518,041.60 = 203,310.66/x
  3. Step 3: Cross multiply
    375,392.79x = 518,041.60 × 203,310.66
  4. Step 4: Simplify right side
    375,392.79x = 105,323,379,603.46
  5. Step 5: Solve for x
    x = 105,323,379,603.46/375,392.79
  6. Step 6: Final answer
    x = 280,568.47

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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.