Home / 225,027.63-310,538.21-128,228.72

Finding the Fourth Proportional to 225,027.63, 310,538.21 and 128,228.72

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Solution

The fourth proportional to 225,027.63, 310,538.21 and 128,228.72 is: 176,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,027.63 : 310,538.21 = 128,228.72 : x
  2. Step 2: Convert to fraction form
    225,027.63/310,538.21 = 128,228.72/x
  3. Step 3: Cross multiply
    225,027.63x = 310,538.21 × 128,228.72
  4. Step 4: Simplify right side
    225,027.63x = 39,819,916,723.62
  5. Step 5: Solve for x
    x = 39,819,916,723.62/225,027.63
  6. Step 6: Final answer
    x = 176,955.68

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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.