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Finding the Fourth Proportional to 228,576.66, 315,438.11 and 137,915.07

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Solution

The fourth proportional to 228,576.66, 315,438.11 and 137,915.07 is: 190,324.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,576.66 : 315,438.11 = 137,915.07 : x
  2. Step 2: Convert to fraction form
    228,576.66/315,438.11 = 137,915.07/x
  3. Step 3: Cross multiply
    228,576.66x = 315,438.11 × 137,915.07
  4. Step 4: Simplify right side
    228,576.66x = 43,503,666,754.55
  5. Step 5: Solve for x
    x = 43,503,666,754.55/228,576.66
  6. Step 6: Final answer
    x = 190,324.19

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1.5x scale

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.