Home / 226,853.64-312,987.52-128,720.76

Finding the Fourth Proportional to 226,853.64, 312,987.52 and 128,720.76

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Solution

The fourth proportional to 226,853.64, 312,987.52 and 128,720.76 is: 177,594.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,853.64 : 312,987.52 = 128,720.76 : x
  2. Step 2: Convert to fraction form
    226,853.64/312,987.52 = 128,720.76/x
  3. Step 3: Cross multiply
    226,853.64x = 312,987.52 × 128,720.76
  4. Step 4: Simplify right side
    226,853.64x = 40,287,991,444.92
  5. Step 5: Solve for x
    x = 40,287,991,444.92/226,853.64
  6. Step 6: Final answer
    x = 177,594.64

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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.