Home / 279,289.38-385,420.23-151,965.09

Finding the Fourth Proportional to 279,289.38, 385,420.23 and 151,965.09

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Solution

The fourth proportional to 279,289.38, 385,420.23 and 151,965.09 is: 209,712.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,289.38 : 385,420.23 = 151,965.09 : x
  2. Step 2: Convert to fraction form
    279,289.38/385,420.23 = 151,965.09/x
  3. Step 3: Cross multiply
    279,289.38x = 385,420.23 × 151,965.09
  4. Step 4: Simplify right side
    279,289.38x = 58,570,419,939.77
  5. Step 5: Solve for x
    x = 58,570,419,939.77/279,289.38
  6. Step 6: Final answer
    x = 209,712.31

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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.