Home / 280,238.64-386,738.65-152,921.22

Finding the Fourth Proportional to 280,238.64, 386,738.65 and 152,921.22

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Solution

The fourth proportional to 280,238.64, 386,738.65 and 152,921.22 is: 211,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,238.64 : 386,738.65 = 152,921.22 : x
  2. Step 2: Convert to fraction form
    280,238.64/386,738.65 = 152,921.22/x
  3. Step 3: Cross multiply
    280,238.64x = 386,738.65 × 152,921.22
  4. Step 4: Simplify right side
    280,238.64x = 59,140,544,245.46
  5. Step 5: Solve for x
    x = 59,140,544,245.46/280,238.64
  6. Step 6: Final answer
    x = 211,036.37

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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.