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Finding the Fourth Proportional to 345,313.95, 517,921.71 and 108,650.47

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Solution

The fourth proportional to 345,313.95, 517,921.71 and 108,650.47 is: 162,960.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,313.95 : 517,921.71 = 108,650.47 : x
  2. Step 2: Convert to fraction form
    345,313.95/517,921.71 = 108,650.47/x
  3. Step 3: Cross multiply
    345,313.95x = 517,921.71 × 108,650.47
  4. Step 4: Simplify right side
    345,313.95x = 56,272,437,214.70
  5. Step 5: Solve for x
    x = 56,272,437,214.70/345,313.95
  6. Step 6: Final answer
    x = 162,960.22

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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.