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Finding the Fourth Proportional to 316,998.99, 475,385.49 and 103,715.46

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Solution

The fourth proportional to 316,998.99, 475,385.49 and 103,715.46 is: 155,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,998.99 : 475,385.49 = 103,715.46 : x
  2. Step 2: Convert to fraction form
    316,998.99/475,385.49 = 103,715.46/x
  3. Step 3: Cross multiply
    316,998.99x = 475,385.49 × 103,715.46
  4. Step 4: Simplify right side
    316,998.99x = 49,304,824,772.68
  5. Step 5: Solve for x
    x = 49,304,824,772.68/316,998.99
  6. Step 6: Final answer
    x = 155,536.22

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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.