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Finding the Fourth Proportional to 228,236.99, 342,502.37 and 123,128.51

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Solution

The fourth proportional to 228,236.99, 342,502.37 and 123,128.51 is: 184,772.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,236.99 : 342,502.37 = 123,128.51 : x
  2. Step 2: Convert to fraction form
    228,236.99/342,502.37 = 123,128.51/x
  3. Step 3: Cross multiply
    228,236.99x = 342,502.37 × 123,128.51
  4. Step 4: Simplify right side
    228,236.99x = 42,171,805,873.93
  5. Step 5: Solve for x
    x = 42,171,805,873.93/228,236.99
  6. Step 6: Final answer
    x = 184,772.00

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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.