Home / 289,867.80-434,780.10-121,344.60

Finding the Fourth Proportional to 289,867.80, 434,780.10 and 121,344.60

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Solution

The fourth proportional to 289,867.80, 434,780.10 and 121,344.60 is: 182,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,867.80 : 434,780.10 = 121,344.60 : x
  2. Step 2: Convert to fraction form
    289,867.80/434,780.10 = 121,344.60/x
  3. Step 3: Cross multiply
    289,867.80x = 434,780.10 × 121,344.60
  4. Step 4: Simplify right side
    289,867.80x = 52,758,217,322.46
  5. Step 5: Solve for x
    x = 52,758,217,322.46/289,867.80
  6. Step 6: Final answer
    x = 182,007.86

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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.