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Finding the Fourth Proportional to 340,371.05, 510,501.90 and 103,658.68

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Solution

The fourth proportional to 340,371.05, 510,501.90 and 103,658.68 is: 155,471.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,371.05 : 510,501.90 = 103,658.68 : x
  2. Step 2: Convert to fraction form
    340,371.05/510,501.90 = 103,658.68/x
  3. Step 3: Cross multiply
    340,371.05x = 510,501.90 × 103,658.68
  4. Step 4: Simplify right side
    340,371.05x = 52,917,953,091.49
  5. Step 5: Solve for x
    x = 52,917,953,091.49/340,371.05
  6. Step 6: Final answer
    x = 155,471.37

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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.