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Finding the Fourth Proportional to 264,865.80, 397,298.70 and 260,491.80

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Solution

The fourth proportional to 264,865.80, 397,298.70 and 260,491.80 is: 390,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,865.80 : 397,298.70 = 260,491.80 : x
  2. Step 2: Convert to fraction form
    264,865.80/397,298.70 = 260,491.80/x
  3. Step 3: Cross multiply
    264,865.80x = 397,298.70 × 260,491.80
  4. Step 4: Simplify right side
    264,865.80x = 103,493,053,500.66
  5. Step 5: Solve for x
    x = 103,493,053,500.66/264,865.80
  6. Step 6: Final answer
    x = 390,737.70

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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.