Home / 279,090.36-385,143.66-151,771.32

Finding the Fourth Proportional to 279,090.36, 385,143.66 and 151,771.32

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Solution

The fourth proportional to 279,090.36, 385,143.66 and 151,771.32 is: 209,443.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,090.36 : 385,143.66 = 151,771.32 : x
  2. Step 2: Convert to fraction form
    279,090.36/385,143.66 = 151,771.32/x
  3. Step 3: Cross multiply
    279,090.36x = 385,143.66 × 151,771.32
  4. Step 4: Simplify right side
    279,090.36x = 58,453,761,667.83
  5. Step 5: Solve for x
    x = 58,453,761,667.83/279,090.36
  6. Step 6: Final answer
    x = 209,443.86

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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.