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Finding the Fourth Proportional to 340,390.05, 510,604.28 and 103,740.45

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Solution

The fourth proportional to 340,390.05, 510,604.28 and 103,740.45 is: 155,616.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,390.05 : 510,604.28 = 103,740.45 : x
  2. Step 2: Convert to fraction form
    340,390.05/510,604.28 = 103,740.45/x
  3. Step 3: Cross multiply
    340,390.05x = 510,604.28 × 103,740.45
  4. Step 4: Simplify right side
    340,390.05x = 52,970,317,260.42
  5. Step 5: Solve for x
    x = 52,970,317,260.42/340,390.05
  6. Step 6: Final answer
    x = 155,616.53

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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.