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Finding the Fourth Proportional to 228,294.06, 315,172.49 and 137,672.98

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Solution

The fourth proportional to 228,294.06, 315,172.49 and 137,672.98 is: 190,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,294.06 : 315,172.49 = 137,672.98 : x
  2. Step 2: Convert to fraction form
    228,294.06/315,172.49 = 137,672.98/x
  3. Step 3: Cross multiply
    228,294.06x = 315,172.49 × 137,672.98
  4. Step 4: Simplify right side
    228,294.06x = 43,390,735,912.32
  5. Step 5: Solve for x
    x = 43,390,735,912.32/228,294.06
  6. Step 6: Final answer
    x = 190,065.11

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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.