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Finding the Fourth Proportional to 279,083.15, 385,130.36 and 151,757.63

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Solution

The fourth proportional to 279,083.15, 385,130.36 and 151,757.63 is: 209,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,083.15 : 385,130.36 = 151,757.63 : x
  2. Step 2: Convert to fraction form
    279,083.15/385,130.36 = 151,757.63/x
  3. Step 3: Cross multiply
    279,083.15x = 385,130.36 × 151,757.63
  4. Step 4: Simplify right side
    279,083.15x = 58,446,469,915.86
  5. Step 5: Solve for x
    x = 58,446,469,915.86/279,083.15
  6. Step 6: Final answer
    x = 209,423.14

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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.