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Finding the Fourth Proportional to 345,581.51, 518,294.50 and 123,965.51

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Solution

The fourth proportional to 345,581.51, 518,294.50 and 123,965.51 is: 185,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,581.51 : 518,294.50 = 123,965.51 : x
  2. Step 2: Convert to fraction form
    345,581.51/518,294.50 = 123,965.51/x
  3. Step 3: Cross multiply
    345,581.51x = 518,294.50 × 123,965.51
  4. Step 4: Simplify right side
    345,581.51x = 64,250,639,121.31
  5. Step 5: Solve for x
    x = 64,250,639,121.31/345,581.51
  6. Step 6: Final answer
    x = 185,920.36

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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.