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Finding the Fourth Proportional to 389,601.04, 584,434.86 and 136,859.56

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Solution

The fourth proportional to 389,601.04, 584,434.86 and 136,859.56 is: 205,301.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,601.04 : 584,434.86 = 136,859.56 : x
  2. Step 2: Convert to fraction form
    389,601.04/584,434.86 = 136,859.56/x
  3. Step 3: Cross multiply
    389,601.04x = 584,434.86 × 136,859.56
  4. Step 4: Simplify right side
    389,601.04x = 79,985,497,788.26
  5. Step 5: Solve for x
    x = 79,985,497,788.26/389,601.04
  6. Step 6: Final answer
    x = 205,301.04

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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.