Home / 280,451.26-387,022.50-153,126.82

Finding the Fourth Proportional to 280,451.26, 387,022.50 and 153,126.82

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Solution

The fourth proportional to 280,451.26, 387,022.50 and 153,126.82 is: 211,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,451.26 : 387,022.50 = 153,126.82 : x
  2. Step 2: Convert to fraction form
    280,451.26/387,022.50 = 153,126.82/x
  3. Step 3: Cross multiply
    280,451.26x = 387,022.50 × 153,126.82
  4. Step 4: Simplify right side
    280,451.26x = 59,263,524,693.45
  5. Step 5: Solve for x
    x = 59,263,524,693.45/280,451.26
  6. Step 6: Final answer
    x = 211,314.88

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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.