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Finding the Fourth Proportional to 505,564.92, 758,485.92 and 221,203.92

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Solution

The fourth proportional to 505,564.92, 758,485.92 and 221,203.92 is: 331,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,564.92 : 758,485.92 = 221,203.92 : x
  2. Step 2: Convert to fraction form
    505,564.92/758,485.92 = 221,203.92/x
  3. Step 3: Cross multiply
    505,564.92x = 758,485.92 × 221,203.92
  4. Step 4: Simplify right side
    505,564.92x = 167,780,058,768.81
  5. Step 5: Solve for x
    x = 167,780,058,768.81/505,564.92
  6. Step 6: Final answer
    x = 331,866.50

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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.