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Finding the Fourth Proportional to 228,506.88, 315,309.60 and 133,030.56

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Solution

The fourth proportional to 228,506.88, 315,309.60 and 133,030.56 is: 183,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,506.88 : 315,309.60 = 133,030.56 : x
  2. Step 2: Convert to fraction form
    228,506.88/315,309.60 = 133,030.56/x
  3. Step 3: Cross multiply
    228,506.88x = 315,309.60 × 133,030.56
  4. Step 4: Simplify right side
    228,506.88x = 41,945,812,661.38
  5. Step 5: Solve for x
    x = 41,945,812,661.38/228,506.88
  6. Step 6: Final answer
    x = 183,564.77

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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.