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Finding the Fourth Proportional to 225,590.96, 338,390.28 and 85,415.60

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Solution

The fourth proportional to 225,590.96, 338,390.28 and 85,415.60 is: 128,124.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,590.96 : 338,390.28 = 85,415.60 : x
  2. Step 2: Convert to fraction form
    225,590.96/338,390.28 = 85,415.60/x
  3. Step 3: Cross multiply
    225,590.96x = 338,390.28 × 85,415.60
  4. Step 4: Simplify right side
    225,590.96x = 28,903,808,800.37
  5. Step 5: Solve for x
    x = 28,903,808,800.37/225,590.96
  6. Step 6: Final answer
    x = 128,124.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.