Home / 224,245.96-309,445.86-128,743.72

Finding the Fourth Proportional to 224,245.96, 309,445.86 and 128,743.72

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Solution

The fourth proportional to 224,245.96, 309,445.86 and 128,743.72 is: 177,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,245.96 : 309,445.86 = 128,743.72 : x
  2. Step 2: Convert to fraction form
    224,245.96/309,445.86 = 128,743.72/x
  3. Step 3: Cross multiply
    224,245.96x = 309,445.86 × 128,743.72
  4. Step 4: Simplify right side
    224,245.96x = 39,839,211,155.00
  5. Step 5: Solve for x
    x = 39,839,211,155.00/224,245.96
  6. Step 6: Final answer
    x = 177,658.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.