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Finding the Fourth Proportional to 228,351.76, 315,020.21 and 147,805.16

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Solution

The fourth proportional to 228,351.76, 315,020.21 and 147,805.16 is: 203,903.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,351.76 : 315,020.21 = 147,805.16 : x
  2. Step 2: Convert to fraction form
    228,351.76/315,020.21 = 147,805.16/x
  3. Step 3: Cross multiply
    228,351.76x = 315,020.21 × 147,805.16
  4. Step 4: Simplify right side
    228,351.76x = 46,561,610,228.16
  5. Step 5: Solve for x
    x = 46,561,610,228.16/228,351.76
  6. Step 6: Final answer
    x = 203,903.01

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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.