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Finding the Fourth Proportional to 476,845.80, 715,268.70 and 121,887.60

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Solution

The fourth proportional to 476,845.80, 715,268.70 and 121,887.60 is: 182,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,845.80 : 715,268.70 = 121,887.60 : x
  2. Step 2: Convert to fraction form
    476,845.80/715,268.70 = 121,887.60/x
  3. Step 3: Cross multiply
    476,845.80x = 715,268.70 × 121,887.60
  4. Step 4: Simplify right side
    476,845.80x = 87,182,385,198.12
  5. Step 5: Solve for x
    x = 87,182,385,198.12/476,845.80
  6. Step 6: Final answer
    x = 182,831.40

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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.