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Finding the Fourth Proportional to 311,915.56, 430,436.28 and 184,593.28

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Solution

The fourth proportional to 311,915.56, 430,436.28 and 184,593.28 is: 254,734.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,915.56 : 430,436.28 = 184,593.28 : x
  2. Step 2: Convert to fraction form
    311,915.56/430,436.28 = 184,593.28/x
  3. Step 3: Cross multiply
    311,915.56x = 430,436.28 × 184,593.28
  4. Step 4: Simplify right side
    311,915.56x = 79,455,644,756.20
  5. Step 5: Solve for x
    x = 79,455,644,756.20/311,915.56
  6. Step 6: Final answer
    x = 254,734.47

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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.