Home / 279,021.50-385,047.76-151,697.09

Finding the Fourth Proportional to 279,021.50, 385,047.76 and 151,697.09

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Solution

The fourth proportional to 279,021.50, 385,047.76 and 151,697.09 is: 209,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,021.50 : 385,047.76 = 151,697.09 : x
  2. Step 2: Convert to fraction form
    279,021.50/385,047.76 = 151,697.09/x
  3. Step 3: Cross multiply
    279,021.50x = 385,047.76 × 151,697.09
  4. Step 4: Simplify right side
    279,021.50x = 58,410,624,703.02
  5. Step 5: Solve for x
    x = 58,410,624,703.02/279,021.50
  6. Step 6: Final answer
    x = 209,340.95

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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.