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Finding the Fourth Proportional to 395,063.44, 592,656.72 and 128,762.18

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Solution

The fourth proportional to 395,063.44, 592,656.72 and 128,762.18 is: 193,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,063.44 : 592,656.72 = 128,762.18 : x
  2. Step 2: Convert to fraction form
    395,063.44/592,656.72 = 128,762.18/x
  3. Step 3: Cross multiply
    395,063.44x = 592,656.72 × 128,762.18
  4. Step 4: Simplify right side
    395,063.44x = 76,311,771,258.85
  5. Step 5: Solve for x
    x = 76,311,771,258.85/395,063.44
  6. Step 6: Final answer
    x = 193,163.33

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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.