Home / 289,480.18-434,344.20-121,039.88

Finding the Fourth Proportional to 289,480.18, 434,344.20 and 121,039.88

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Solution

The fourth proportional to 289,480.18, 434,344.20 and 121,039.88 is: 181,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,480.18 : 434,344.20 = 121,039.88 : x
  2. Step 2: Convert to fraction form
    289,480.18/434,344.20 = 121,039.88/x
  3. Step 3: Cross multiply
    289,480.18x = 434,344.20 × 121,039.88
  4. Step 4: Simplify right side
    289,480.18x = 52,572,969,846.70
  5. Step 5: Solve for x
    x = 52,572,969,846.70/289,480.18
  6. Step 6: Final answer
    x = 181,611.64

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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.