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Finding the Fourth Proportional to 405,737.60, 608,606.40 and 248,273.60

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Solution

The fourth proportional to 405,737.60, 608,606.40 and 248,273.60 is: 372,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,737.60 : 608,606.40 = 248,273.60 : x
  2. Step 2: Convert to fraction form
    405,737.60/608,606.40 = 248,273.60/x
  3. Step 3: Cross multiply
    405,737.60x = 608,606.40 × 248,273.60
  4. Step 4: Simplify right side
    405,737.60x = 151,100,901,911.04
  5. Step 5: Solve for x
    x = 151,100,901,911.04/405,737.60
  6. Step 6: Final answer
    x = 372,410.40

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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.