Home / 280,210.66-386,238.98-189,533.55

Finding the Fourth Proportional to 280,210.66, 386,238.98 and 189,533.55

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Solution

The fourth proportional to 280,210.66, 386,238.98 and 189,533.55 is: 261,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,210.66 : 386,238.98 = 189,533.55 : x
  2. Step 2: Convert to fraction form
    280,210.66/386,238.98 = 189,533.55/x
  3. Step 3: Cross multiply
    280,210.66x = 386,238.98 × 189,533.55
  4. Step 4: Simplify right side
    280,210.66x = 73,205,246,950.01
  5. Step 5: Solve for x
    x = 73,205,246,950.01/280,210.66
  6. Step 6: Final answer
    x = 261,250.76

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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.