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Finding the Fourth Proportional to 340,390.30, 510,604.65 and 103,740.70

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Solution

The fourth proportional to 340,390.30, 510,604.65 and 103,740.70 is: 155,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,390.30 : 510,604.65 = 103,740.70 : x
  2. Step 2: Convert to fraction form
    340,390.30/510,604.65 = 103,740.70/x
  3. Step 3: Cross multiply
    340,390.30x = 510,604.65 × 103,740.70
  4. Step 4: Simplify right side
    340,390.30x = 52,970,483,814.26
  5. Step 5: Solve for x
    x = 52,970,483,814.26/340,390.30
  6. Step 6: Final answer
    x = 155,616.90

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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.