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Finding the Fourth Proportional to 300,607.07, 450,899.64 and 90,239.54

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Solution

The fourth proportional to 300,607.07, 450,899.64 and 90,239.54 is: 135,356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,607.07 : 450,899.64 = 90,239.54 : x
  2. Step 2: Convert to fraction form
    300,607.07/450,899.64 = 90,239.54/x
  3. Step 3: Cross multiply
    300,607.07x = 450,899.64 × 90,239.54
  4. Step 4: Simplify right side
    300,607.07x = 40,688,973,845.27
  5. Step 5: Solve for x
    x = 40,688,973,845.27/300,607.07
  6. Step 6: Final answer
    x = 135,356.01

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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.