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Finding the Fourth Proportional to 228,270.56, 315,123.21 and 151,916.72

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Solution

The fourth proportional to 228,270.56, 315,123.21 and 151,916.72 is: 209,718.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,270.56 : 315,123.21 = 151,916.72 : x
  2. Step 2: Convert to fraction form
    228,270.56/315,123.21 = 151,916.72/x
  3. Step 3: Cross multiply
    228,270.56x = 315,123.21 × 151,916.72
  4. Step 4: Simplify right side
    228,270.56x = 47,872,482,883.46
  5. Step 5: Solve for x
    x = 47,872,482,883.46/228,270.56
  6. Step 6: Final answer
    x = 209,718.17

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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.