Home / 224,392.88-309,631.51-128,899.55

Finding the Fourth Proportional to 224,392.88, 309,631.51 and 128,899.55

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Solution

The fourth proportional to 224,392.88, 309,631.51 and 128,899.55 is: 177,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,392.88 : 309,631.51 = 128,899.55 : x
  2. Step 2: Convert to fraction form
    224,392.88/309,631.51 = 128,899.55/x
  3. Step 3: Cross multiply
    224,392.88x = 309,631.51 × 128,899.55
  4. Step 4: Simplify right side
    224,392.88x = 39,911,363,240.02
  5. Step 5: Solve for x
    x = 39,911,363,240.02/224,392.88
  6. Step 6: Final answer
    x = 177,863.77

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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.