Home / 209,490.32-314,078.52-126,364.88

Finding the Fourth Proportional to 209,490.32, 314,078.52 and 126,364.88

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Solution

The fourth proportional to 209,490.32, 314,078.52 and 126,364.88 is: 189,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,490.32 : 314,078.52 = 126,364.88 : x
  2. Step 2: Convert to fraction form
    209,490.32/314,078.52 = 126,364.88/x
  3. Step 3: Cross multiply
    209,490.32x = 314,078.52 × 126,364.88
  4. Step 4: Simplify right side
    209,490.32x = 39,688,494,490.38
  5. Step 5: Solve for x
    x = 39,688,494,490.38/209,490.32
  6. Step 6: Final answer
    x = 189,452.64

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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.