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Finding the Fourth Proportional to 413,369.20, 620,053.80 and 203,417.20

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Solution

The fourth proportional to 413,369.20, 620,053.80 and 203,417.20 is: 305,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,369.20 : 620,053.80 = 203,417.20 : x
  2. Step 2: Convert to fraction form
    413,369.20/620,053.80 = 203,417.20/x
  3. Step 3: Cross multiply
    413,369.20x = 620,053.80 × 203,417.20
  4. Step 4: Simplify right side
    413,369.20x = 126,129,607,845.36
  5. Step 5: Solve for x
    x = 126,129,607,845.36/413,369.20
  6. Step 6: Final answer
    x = 305,125.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.