Home / 345,898.45-518,948.15-143,457.43

Finding the Fourth Proportional to 345,898.45, 518,948.15 and 143,457.43

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Solution

The fourth proportional to 345,898.45, 518,948.15 and 143,457.43 is: 215,227.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,898.45 : 518,948.15 = 143,457.43 : x
  2. Step 2: Convert to fraction form
    345,898.45/518,948.15 = 143,457.43/x
  3. Step 3: Cross multiply
    345,898.45x = 518,948.15 × 143,457.43
  4. Step 4: Simplify right side
    345,898.45x = 74,446,967,902.25
  5. Step 5: Solve for x
    x = 74,446,967,902.25/345,898.45
  6. Step 6: Final answer
    x = 215,227.82

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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.