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Finding the Fourth Proportional to 340,400.60, 509,984.94 and 245,114.90

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Solution

The fourth proportional to 340,400.60, 509,984.94 and 245,114.90 is: 367,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,400.60 : 509,984.94 = 245,114.90 : x
  2. Step 2: Convert to fraction form
    340,400.60/509,984.94 = 245,114.90/x
  3. Step 3: Cross multiply
    340,400.60x = 509,984.94 × 245,114.90
  4. Step 4: Simplify right side
    340,400.60x = 125,004,907,569.61
  5. Step 5: Solve for x
    x = 125,004,907,569.61/340,400.60
  6. Step 6: Final answer
    x = 367,228.81

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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.