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Finding the Fourth Proportional to 387,581.60, 581,372.40 and 366,845.60

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Solution

The fourth proportional to 387,581.60, 581,372.40 and 366,845.60 is: 550,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,581.60 : 581,372.40 = 366,845.60 : x
  2. Step 2: Convert to fraction form
    387,581.60/581,372.40 = 366,845.60/x
  3. Step 3: Cross multiply
    387,581.60x = 581,372.40 × 366,845.60
  4. Step 4: Simplify right side
    387,581.60x = 213,273,906,901.44
  5. Step 5: Solve for x
    x = 213,273,906,901.44/387,581.60
  6. Step 6: Final answer
    x = 550,268.40

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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.