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Finding the Fourth Proportional to 340,351.38, 510,603.21 and 103,712.58

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Solution

The fourth proportional to 340,351.38, 510,603.21 and 103,712.58 is: 155,592.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,351.38 : 510,603.21 = 103,712.58 : x
  2. Step 2: Convert to fraction form
    340,351.38/510,603.21 = 103,712.58/x
  3. Step 3: Cross multiply
    340,351.38x = 510,603.21 × 103,712.58
  4. Step 4: Simplify right side
    340,351.38x = 52,955,976,265.38
  5. Step 5: Solve for x
    x = 52,955,976,265.38/340,351.38
  6. Step 6: Final answer
    x = 155,592.07

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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.