Home / 389,909.19-584,919.51-120,060.12

Finding the Fourth Proportional to 389,909.19, 584,919.51 and 120,060.12

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Solution

The fourth proportional to 389,909.19, 584,919.51 and 120,060.12 is: 180,107.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,909.19 : 584,919.51 = 120,060.12 : x
  2. Step 2: Convert to fraction form
    389,909.19/584,919.51 = 120,060.12/x
  3. Step 3: Cross multiply
    389,909.19x = 584,919.51 × 120,060.12
  4. Step 4: Simplify right side
    389,909.19x = 70,225,506,560.94
  5. Step 5: Solve for x
    x = 70,225,506,560.94/389,909.19
  6. Step 6: Final answer
    x = 180,107.34

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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.