Home / 280,255.47-420,549.29-262,523.36

Finding the Fourth Proportional to 280,255.47, 420,549.29 and 262,523.36

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Solution

The fourth proportional to 280,255.47, 420,549.29 and 262,523.36 is: 393,940.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,255.47 : 420,549.29 = 262,523.36 : x
  2. Step 2: Convert to fraction form
    280,255.47/420,549.29 = 262,523.36/x
  3. Step 3: Cross multiply
    280,255.47x = 420,549.29 × 262,523.36
  4. Step 4: Simplify right side
    280,255.47x = 110,404,012,656.41
  5. Step 5: Solve for x
    x = 110,404,012,656.41/280,255.47
  6. Step 6: Final answer
    x = 393,940.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.