Home / 389,716.80-584,429.40-136,899.60

Finding the Fourth Proportional to 389,716.80, 584,429.40 and 136,899.60

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Solution

The fourth proportional to 389,716.80, 584,429.40 and 136,899.60 is: 205,298.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,716.80 : 584,429.40 = 136,899.60 : x
  2. Step 2: Convert to fraction form
    389,716.80/584,429.40 = 136,899.60/x
  3. Step 3: Cross multiply
    389,716.80x = 584,429.40 × 136,899.60
  4. Step 4: Simplify right side
    389,716.80x = 80,008,151,088.24
  5. Step 5: Solve for x
    x = 80,008,151,088.24/389,716.80
  6. Step 6: Final answer
    x = 205,298.18

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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.