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Finding the Fourth Proportional to 362,122.60, 500,216.16 and 278,287.60

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Solution

The fourth proportional to 362,122.60, 500,216.16 and 278,287.60 is: 384,411.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,122.60 : 500,216.16 = 278,287.60 : x
  2. Step 2: Convert to fraction form
    362,122.60/500,216.16 = 278,287.60/x
  3. Step 3: Cross multiply
    362,122.60x = 500,216.16 × 278,287.60
  4. Step 4: Simplify right side
    362,122.60x = 139,203,954,647.62
  5. Step 5: Solve for x
    x = 139,203,954,647.62/362,122.60
  6. Step 6: Final answer
    x = 384,411.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.