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Finding the Fourth Proportional to 538,004.89, 742,418.32 and 308,550.32

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Solution

The fourth proportional to 538,004.89, 742,418.32 and 308,550.32 is: 425,783.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,004.89 : 742,418.32 = 308,550.32 : x
  2. Step 2: Convert to fraction form
    538,004.89/742,418.32 = 308,550.32/x
  3. Step 3: Cross multiply
    538,004.89x = 742,418.32 × 308,550.32
  4. Step 4: Simplify right side
    538,004.89x = 229,073,410,209.86
  5. Step 5: Solve for x
    x = 229,073,410,209.86/538,004.89
  6. Step 6: Final answer
    x = 425,783.14

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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.