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Finding the Fourth Proportional to 345,057.49, 517,669.28 and 145,434.97

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Solution

The fourth proportional to 345,057.49, 517,669.28 and 145,434.97 is: 218,187.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,057.49 : 517,669.28 = 145,434.97 : x
  2. Step 2: Convert to fraction form
    345,057.49/517,669.28 = 145,434.97/x
  3. Step 3: Cross multiply
    345,057.49x = 517,669.28 × 145,434.97
  4. Step 4: Simplify right side
    345,057.49x = 75,287,216,206.72
  5. Step 5: Solve for x
    x = 75,287,216,206.72/345,057.49
  6. Step 6: Final answer
    x = 218,187.46

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1.5x scale

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.