Home / 224,415.80-309,721.24-128,922.32

Finding the Fourth Proportional to 224,415.80, 309,721.24 and 128,922.32

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Solution

The fourth proportional to 224,415.80, 309,721.24 and 128,922.32 is: 177,928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,415.80 : 309,721.24 = 128,922.32 : x
  2. Step 2: Convert to fraction form
    224,415.80/309,721.24 = 128,922.32/x
  3. Step 3: Cross multiply
    224,415.80x = 309,721.24 × 128,922.32
  4. Step 4: Simplify right side
    224,415.80x = 39,929,980,814.08
  5. Step 5: Solve for x
    x = 39,929,980,814.08/224,415.80
  6. Step 6: Final answer
    x = 177,928.56

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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.