Home / 280,495.60-420,946.38-109,742.56

Finding the Fourth Proportional to 280,495.60, 420,946.38 and 109,742.56

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Solution

The fourth proportional to 280,495.60, 420,946.38 and 109,742.56 is: 164,693.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,495.60 : 420,946.38 = 109,742.56 : x
  2. Step 2: Convert to fraction form
    280,495.60/420,946.38 = 109,742.56/x
  3. Step 3: Cross multiply
    280,495.60x = 420,946.38 × 109,742.56
  4. Step 4: Simplify right side
    280,495.60x = 46,195,733,363.93
  5. Step 5: Solve for x
    x = 46,195,733,363.93/280,495.60
  6. Step 6: Final answer
    x = 164,693.25

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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.