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Finding the Fourth Proportional to 384,775.20, 577,162.80 and 104,292.45

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Solution

The fourth proportional to 384,775.20, 577,162.80 and 104,292.45 is: 156,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,775.20 : 577,162.80 = 104,292.45 : x
  2. Step 2: Convert to fraction form
    384,775.20/577,162.80 = 104,292.45/x
  3. Step 3: Cross multiply
    384,775.20x = 577,162.80 × 104,292.45
  4. Step 4: Simplify right side
    384,775.20x = 60,193,722,460.86
  5. Step 5: Solve for x
    x = 60,193,722,460.86/384,775.20
  6. Step 6: Final answer
    x = 156,438.68

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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.