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Finding the Fourth Proportional to 340,035.30, 510,072.15 and 103,385.70

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Solution

The fourth proportional to 340,035.30, 510,072.15 and 103,385.70 is: 155,084.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,035.30 : 510,072.15 = 103,385.70 : x
  2. Step 2: Convert to fraction form
    340,035.30/510,072.15 = 103,385.70/x
  3. Step 3: Cross multiply
    340,035.30x = 510,072.15 × 103,385.70
  4. Step 4: Simplify right side
    340,035.30x = 52,734,166,278.26
  5. Step 5: Solve for x
    x = 52,734,166,278.26/340,035.30
  6. Step 6: Final answer
    x = 155,084.39

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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.