Home / 280,371.78-386,907.03-153,049.50

Finding the Fourth Proportional to 280,371.78, 386,907.03 and 153,049.50

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Solution

The fourth proportional to 280,371.78, 386,907.03 and 153,049.50 is: 211,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,371.78 : 386,907.03 = 153,049.50 : x
  2. Step 2: Convert to fraction form
    280,371.78/386,907.03 = 153,049.50/x
  3. Step 3: Cross multiply
    280,371.78x = 386,907.03 × 153,049.50
  4. Step 4: Simplify right side
    280,371.78x = 59,215,927,487.99
  5. Step 5: Solve for x
    x = 59,215,927,487.99/280,371.78
  6. Step 6: Final answer
    x = 211,205.02

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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.