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Finding the Fourth Proportional to 312,045.20, 468,528.60 and 242,003.60

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Solution

The fourth proportional to 312,045.20, 468,528.60 and 242,003.60 is: 363,362.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,045.20 : 468,528.60 = 242,003.60 : x
  2. Step 2: Convert to fraction form
    312,045.20/468,528.60 = 242,003.60/x
  3. Step 3: Cross multiply
    312,045.20x = 468,528.60 × 242,003.60
  4. Step 4: Simplify right side
    312,045.20x = 113,385,607,902.96
  5. Step 5: Solve for x
    x = 113,385,607,902.96/312,045.20
  6. Step 6: Final answer
    x = 363,362.77

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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.