Home / 413,529.08-620,379.70-129,208.14

Finding the Fourth Proportional to 413,529.08, 620,379.70 and 129,208.14

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Solution

The fourth proportional to 413,529.08, 620,379.70 and 129,208.14 is: 193,839.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,529.08 : 620,379.70 = 129,208.14 : x
  2. Step 2: Convert to fraction form
    413,529.08/620,379.70 = 129,208.14/x
  3. Step 3: Cross multiply
    413,529.08x = 620,379.70 × 129,208.14
  4. Step 4: Simplify right side
    413,529.08x = 80,158,107,130.76
  5. Step 5: Solve for x
    x = 80,158,107,130.76/413,529.08
  6. Step 6: Final answer
    x = 193,839.11

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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.