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Finding the Fourth Proportional to 343,313.28, 514,869.12 and 132,900.96

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Solution

The fourth proportional to 343,313.28, 514,869.12 and 132,900.96 is: 199,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,313.28 : 514,869.12 = 132,900.96 : x
  2. Step 2: Convert to fraction form
    343,313.28/514,869.12 = 132,900.96/x
  3. Step 3: Cross multiply
    343,313.28x = 514,869.12 × 132,900.96
  4. Step 4: Simplify right side
    343,313.28x = 68,426,600,322.36
  5. Step 5: Solve for x
    x = 68,426,600,322.36/343,313.28
  6. Step 6: Final answer
    x = 199,312.42

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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.