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Finding the Fourth Proportional to 395,057.44, 592,647.72 and 128,756.17

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Solution

The fourth proportional to 395,057.44, 592,647.72 and 128,756.17 is: 193,154.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,057.44 : 592,647.72 = 128,756.17 : x
  2. Step 2: Convert to fraction form
    395,057.44/592,647.72 = 128,756.17/x
  3. Step 3: Cross multiply
    395,057.44x = 592,647.72 × 128,756.17
  4. Step 4: Simplify right side
    395,057.44x = 76,307,050,586.43
  5. Step 5: Solve for x
    x = 76,307,050,586.43/395,057.44
  6. Step 6: Final answer
    x = 193,154.32

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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.