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Finding the Fourth Proportional to 662,081.60, 993,640.80 and 307,139.60

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Solution

The fourth proportional to 662,081.60, 993,640.80 and 307,139.60 is: 460,949.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,081.60 : 993,640.80 = 307,139.60 : x
  2. Step 2: Convert to fraction form
    662,081.60/993,640.80 = 307,139.60/x
  3. Step 3: Cross multiply
    662,081.60x = 993,640.80 × 307,139.60
  4. Step 4: Simplify right side
    662,081.60x = 305,186,437,855.68
  5. Step 5: Solve for x
    x = 305,186,437,855.68/662,081.60
  6. Step 6: Final answer
    x = 460,949.89

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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.