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Finding the Fourth Proportional to 340,385.37, 510,578.10 and 103,728.21

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Solution

The fourth proportional to 340,385.37, 510,578.10 and 103,728.21 is: 155,592.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,385.37 : 510,578.10 = 103,728.21 : x
  2. Step 2: Convert to fraction form
    340,385.37/510,578.10 = 103,728.21/x
  3. Step 3: Cross multiply
    340,385.37x = 510,578.10 × 103,728.21
  4. Step 4: Simplify right side
    340,385.37x = 52,961,352,378.20
  5. Step 5: Solve for x
    x = 52,961,352,378.20/340,385.37
  6. Step 6: Final answer
    x = 155,592.33

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1.5x scale

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.