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Finding the Fourth Proportional to 375,429.90, 518,089.13 and 203,343.58

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Solution

The fourth proportional to 375,429.90, 518,089.13 and 203,343.58 is: 280,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,429.90 : 518,089.13 = 203,343.58 : x
  2. Step 2: Convert to fraction form
    375,429.90/518,089.13 = 203,343.58/x
  3. Step 3: Cross multiply
    375,429.90x = 518,089.13 × 203,343.58
  4. Step 4: Simplify right side
    375,429.90x = 105,350,098,453.29
  5. Step 5: Solve for x
    x = 105,350,098,453.29/375,429.90
  6. Step 6: Final answer
    x = 280,611.90

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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.