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Finding the Fourth Proportional to 395,173.46, 592,462.10 and 128,774.90

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Solution

The fourth proportional to 395,173.46, 592,462.10 and 128,774.90 is: 193,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,173.46 : 592,462.10 = 128,774.90 : x
  2. Step 2: Convert to fraction form
    395,173.46/592,462.10 = 128,774.90/x
  3. Step 3: Cross multiply
    395,173.46x = 592,462.10 × 128,774.90
  4. Step 4: Simplify right side
    395,173.46x = 76,294,245,040.92
  5. Step 5: Solve for x
    x = 76,294,245,040.92/395,173.46
  6. Step 6: Final answer
    x = 193,065.21

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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.