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Finding the Fourth Proportional to 279,264.44, 385,386.54 and 151,940.90

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Solution

The fourth proportional to 279,264.44, 385,386.54 and 151,940.90 is: 209,679.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,264.44 : 385,386.54 = 151,940.90 : x
  2. Step 2: Convert to fraction form
    279,264.44/385,386.54 = 151,940.90/x
  3. Step 3: Cross multiply
    279,264.44x = 385,386.54 × 151,940.90
  4. Step 4: Simplify right side
    279,264.44x = 58,555,977,735.49
  5. Step 5: Solve for x
    x = 58,555,977,735.49/279,264.44
  6. Step 6: Final answer
    x = 209,679.32

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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.