Home / 280,359.42-420,108.63-190,285.14

Finding the Fourth Proportional to 280,359.42, 420,108.63 and 190,285.14

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Solution

The fourth proportional to 280,359.42, 420,108.63 and 190,285.14 is: 285,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,359.42 : 420,108.63 = 190,285.14 : x
  2. Step 2: Convert to fraction form
    280,359.42/420,108.63 = 190,285.14/x
  3. Step 3: Cross multiply
    280,359.42x = 420,108.63 × 190,285.14
  4. Step 4: Simplify right side
    280,359.42x = 79,940,429,474.76
  5. Step 5: Solve for x
    x = 79,940,429,474.76/280,359.42
  6. Step 6: Final answer
    x = 285,135.52

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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.