Home / 439,419.12-659,095.20-139,909.20

Finding the Fourth Proportional to 439,419.12, 659,095.20 and 139,909.20

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Solution

The fourth proportional to 439,419.12, 659,095.20 and 139,909.20 is: 209,853.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,419.12 : 659,095.20 = 139,909.20 : x
  2. Step 2: Convert to fraction form
    439,419.12/659,095.20 = 139,909.20/x
  3. Step 3: Cross multiply
    439,419.12x = 659,095.20 × 139,909.20
  4. Step 4: Simplify right side
    439,419.12x = 92,213,482,155.84
  5. Step 5: Solve for x
    x = 92,213,482,155.84/439,419.12
  6. Step 6: Final answer
    x = 209,853.14

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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.