Home / 280,298.08-420,197.14-102,763.72

Finding the Fourth Proportional to 280,298.08, 420,197.14 and 102,763.72

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Solution

The fourth proportional to 280,298.08, 420,197.14 and 102,763.72 is: 154,053.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,298.08 : 420,197.14 = 102,763.72 : x
  2. Step 2: Convert to fraction form
    280,298.08/420,197.14 = 102,763.72/x
  3. Step 3: Cross multiply
    280,298.08x = 420,197.14 × 102,763.72
  4. Step 4: Simplify right side
    280,298.08x = 43,181,018,624.96
  5. Step 5: Solve for x
    x = 43,181,018,624.96/280,298.08
  6. Step 6: Final answer
    x = 154,053.93

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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.