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Finding the Fourth Proportional to 384,911.70, 577,367.55 and 104,428.95

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Solution

The fourth proportional to 384,911.70, 577,367.55 and 104,428.95 is: 156,643.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,911.70 : 577,367.55 = 104,428.95 : x
  2. Step 2: Convert to fraction form
    384,911.70/577,367.55 = 104,428.95/x
  3. Step 3: Cross multiply
    384,911.70x = 577,367.55 × 104,428.95
  4. Step 4: Simplify right side
    384,911.70x = 60,293,887,010.57
  5. Step 5: Solve for x
    x = 60,293,887,010.57/384,911.70
  6. Step 6: Final answer
    x = 156,643.43

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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.