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Finding the Fourth Proportional to 303,558.65, 455,258.58 and 90,269.15

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Solution

The fourth proportional to 303,558.65, 455,258.58 and 90,269.15 is: 135,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,558.65 : 455,258.58 = 90,269.15 : x
  2. Step 2: Convert to fraction form
    303,558.65/455,258.58 = 90,269.15/x
  3. Step 3: Cross multiply
    303,558.65x = 455,258.58 × 90,269.15
  4. Step 4: Simplify right side
    303,558.65x = 41,095,802,770.51
  5. Step 5: Solve for x
    x = 41,095,802,770.51/303,558.65
  6. Step 6: Final answer
    x = 135,380.11

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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.