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Finding the Fourth Proportional to 316,930.60, 475,295.49 and 103,649.23

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Solution

The fourth proportional to 316,930.60, 475,295.49 and 103,649.23 is: 155,441.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,930.60 : 475,295.49 = 103,649.23 : x
  2. Step 2: Convert to fraction form
    316,930.60/475,295.49 = 103,649.23/x
  3. Step 3: Cross multiply
    316,930.60x = 475,295.49 × 103,649.23
  4. Step 4: Simplify right side
    316,930.60x = 49,264,011,560.97
  5. Step 5: Solve for x
    x = 49,264,011,560.97/316,930.60
  6. Step 6: Final answer
    x = 155,441.01

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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.