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Finding the Fourth Proportional to 891,379.72, 1,337,163.30 and 260,295.30

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Solution

The fourth proportional to 891,379.72, 1,337,163.30 and 260,295.30 is: 390,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,379.72 : 1,337,163.30 = 260,295.30 : x
  2. Step 2: Convert to fraction form
    891,379.72/1,337,163.30 = 260,295.30/x
  3. Step 3: Cross multiply
    891,379.72x = 1,337,163.30 × 260,295.30
  4. Step 4: Simplify right side
    891,379.72x = 348,057,322,322.49
  5. Step 5: Solve for x
    x = 348,057,322,322.49/891,379.72
  6. Step 6: Final answer
    x = 390,470.32

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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.