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Finding the Fourth Proportional to 490,600.80, 734,151.60 and 340,135.20

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Solution

The fourth proportional to 490,600.80, 734,151.60 and 340,135.20 is: 508,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,600.80 : 734,151.60 = 340,135.20 : x
  2. Step 2: Convert to fraction form
    490,600.80/734,151.60 = 340,135.20/x
  3. Step 3: Cross multiply
    490,600.80x = 734,151.60 × 340,135.20
  4. Step 4: Simplify right side
    490,600.80x = 249,710,801,296.32
  5. Step 5: Solve for x
    x = 249,710,801,296.32/490,600.80
  6. Step 6: Final answer
    x = 508,989.80

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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.