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Finding the Fourth Proportional to 312,093.60, 468,140.40 and 303,345.60

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Solution

The fourth proportional to 312,093.60, 468,140.40 and 303,345.60 is: 455,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,093.60 : 468,140.40 = 303,345.60 : x
  2. Step 2: Convert to fraction form
    312,093.60/468,140.40 = 303,345.60/x
  3. Step 3: Cross multiply
    312,093.60x = 468,140.40 × 303,345.60
  4. Step 4: Simplify right side
    312,093.60x = 142,008,330,522.24
  5. Step 5: Solve for x
    x = 142,008,330,522.24/312,093.60
  6. Step 6: Final answer
    x = 455,018.40

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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.