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Finding the Fourth Proportional to 293,674.20, 440,511.30 and 260,431.80

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Solution

The fourth proportional to 293,674.20, 440,511.30 and 260,431.80 is: 390,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,674.20 : 440,511.30 = 260,431.80 : x
  2. Step 2: Convert to fraction form
    293,674.20/440,511.30 = 260,431.80/x
  3. Step 3: Cross multiply
    293,674.20x = 440,511.30 × 260,431.80
  4. Step 4: Simplify right side
    293,674.20x = 114,723,150,779.34
  5. Step 5: Solve for x
    x = 114,723,150,779.34/293,674.20
  6. Step 6: Final answer
    x = 390,647.70

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1.5x scale

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.