Home / 279,300.12-385,438.78-151,976.36

Finding the Fourth Proportional to 279,300.12, 385,438.78 and 151,976.36

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Solution

The fourth proportional to 279,300.12, 385,438.78 and 151,976.36 is: 209,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,300.12 : 385,438.78 = 151,976.36 : x
  2. Step 2: Convert to fraction form
    279,300.12/385,438.78 = 151,976.36/x
  3. Step 3: Cross multiply
    279,300.12x = 385,438.78 × 151,976.36
  4. Step 4: Simplify right side
    279,300.12x = 58,577,582,787.24
  5. Step 5: Solve for x
    x = 58,577,582,787.24/279,300.12
  6. Step 6: Final answer
    x = 209,729.89

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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.