Home / 389,910.32-584,921.19-120,061.25

Finding the Fourth Proportional to 389,910.32, 584,921.19 and 120,061.25

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Solution

The fourth proportional to 389,910.32, 584,921.19 and 120,061.25 is: 180,109.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,910.32 : 584,921.19 = 120,061.25 : x
  2. Step 2: Convert to fraction form
    389,910.32/584,921.19 = 120,061.25/x
  3. Step 3: Cross multiply
    389,910.32x = 584,921.19 × 120,061.25
  4. Step 4: Simplify right side
    389,910.32x = 70,226,366,748.51
  5. Step 5: Solve for x
    x = 70,226,366,748.51/389,910.32
  6. Step 6: Final answer
    x = 180,109.03

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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.