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Finding the Fourth Proportional to 387,542.40, 581,313.60 and 246,883.20

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Solution

The fourth proportional to 387,542.40, 581,313.60 and 246,883.20 is: 370,324.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,542.40 : 581,313.60 = 246,883.20 : x
  2. Step 2: Convert to fraction form
    387,542.40/581,313.60 = 246,883.20/x
  3. Step 3: Cross multiply
    387,542.40x = 581,313.60 × 246,883.20
  4. Step 4: Simplify right side
    387,542.40x = 143,516,561,771.52
  5. Step 5: Solve for x
    x = 143,516,561,771.52/387,542.40
  6. Step 6: Final answer
    x = 370,324.80

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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.