Home / 280,250.21-420,541.40-262,518.10

Finding the Fourth Proportional to 280,250.21, 420,541.40 and 262,518.10

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Solution

The fourth proportional to 280,250.21, 420,541.40 and 262,518.10 is: 393,932.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,250.21 : 420,541.40 = 262,518.10 : x
  2. Step 2: Convert to fraction form
    280,250.21/420,541.40 = 262,518.10/x
  3. Step 3: Cross multiply
    280,250.21x = 420,541.40 × 262,518.10
  4. Step 4: Simplify right side
    280,250.21x = 110,399,728,904.28
  5. Step 5: Solve for x
    x = 110,399,728,904.28/280,250.21
  6. Step 6: Final answer
    x = 393,932.72

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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.