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Finding the Fourth Proportional to 619,908.30, 929,087.55 and 264,507.30

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Solution

The fourth proportional to 619,908.30, 929,087.55 and 264,507.30 is: 396,430.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,908.30 : 929,087.55 = 264,507.30 : x
  2. Step 2: Convert to fraction form
    619,908.30/929,087.55 = 264,507.30/x
  3. Step 3: Cross multiply
    619,908.30x = 929,087.55 × 264,507.30
  4. Step 4: Simplify right side
    619,908.30x = 245,750,439,314.12
  5. Step 5: Solve for x
    x = 245,750,439,314.12/619,908.30
  6. Step 6: Final answer
    x = 396,430.31

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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.