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Finding the Fourth Proportional to 375,428.15, 518,086.72 and 203,341.83

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Solution

The fourth proportional to 375,428.15, 518,086.72 and 203,341.83 is: 280,609.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,428.15 : 518,086.72 = 203,341.83 : x
  2. Step 2: Convert to fraction form
    375,428.15/518,086.72 = 203,341.83/x
  3. Step 3: Cross multiply
    375,428.15x = 518,086.72 × 203,341.83
  4. Step 4: Simplify right side
    375,428.15x = 105,348,700,726.79
  5. Step 5: Solve for x
    x = 105,348,700,726.79/375,428.15
  6. Step 6: Final answer
    x = 280,609.49

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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.