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Finding the Fourth Proportional to 343,357.94, 514,943.22 and 143,645.96

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Solution

The fourth proportional to 343,357.94, 514,943.22 and 143,645.96 is: 215,429.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,357.94 : 514,943.22 = 143,645.96 : x
  2. Step 2: Convert to fraction form
    343,357.94/514,943.22 = 143,645.96/x
  3. Step 3: Cross multiply
    343,357.94x = 514,943.22 × 143,645.96
  4. Step 4: Simplify right side
    343,357.94x = 73,969,513,182.39
  5. Step 5: Solve for x
    x = 73,969,513,182.39/343,357.94
  6. Step 6: Final answer
    x = 215,429.74

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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.