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Finding the Fourth Proportional to 471,992.80, 707,989.20 and 340,116.70

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Solution

The fourth proportional to 471,992.80, 707,989.20 and 340,116.70 is: 510,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,992.80 : 707,989.20 = 340,116.70 : x
  2. Step 2: Convert to fraction form
    471,992.80/707,989.20 = 340,116.70/x
  3. Step 3: Cross multiply
    471,992.80x = 707,989.20 × 340,116.70
  4. Step 4: Simplify right side
    471,992.80x = 240,798,950,339.64
  5. Step 5: Solve for x
    x = 240,798,950,339.64/471,992.80
  6. Step 6: Final answer
    x = 510,175.05

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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.