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Finding the Fourth Proportional to 300,602.31, 450,925.34 and 100,921.01

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Solution

The fourth proportional to 300,602.31, 450,925.34 and 100,921.01 is: 151,388.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,602.31 : 450,925.34 = 100,921.01 : x
  2. Step 2: Convert to fraction form
    300,602.31/450,925.34 = 100,921.01/x
  3. Step 3: Cross multiply
    300,602.31x = 450,925.34 × 100,921.01
  4. Step 4: Simplify right side
    300,602.31x = 45,507,839,679.13
  5. Step 5: Solve for x
    x = 45,507,839,679.13/300,602.31
  6. Step 6: Final answer
    x = 151,388.86

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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.