Home / 279,299.12-385,437.40-151,975.36

Finding the Fourth Proportional to 279,299.12, 385,437.40 and 151,975.36

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Solution

The fourth proportional to 279,299.12, 385,437.40 and 151,975.36 is: 209,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,299.12 : 385,437.40 = 151,975.36 : x
  2. Step 2: Convert to fraction form
    279,299.12/385,437.40 = 151,975.36/x
  3. Step 3: Cross multiply
    279,299.12x = 385,437.40 × 151,975.36
  4. Step 4: Simplify right side
    279,299.12x = 58,576,987,622.46
  5. Step 5: Solve for x
    x = 58,576,987,622.46/279,299.12
  6. Step 6: Final answer
    x = 209,728.51

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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.