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Finding the Fourth Proportional to 295,807.20, 443,710.80 and 278,311.20

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Solution

The fourth proportional to 295,807.20, 443,710.80 and 278,311.20 is: 417,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,807.20 : 443,710.80 = 278,311.20 : x
  2. Step 2: Convert to fraction form
    295,807.20/443,710.80 = 278,311.20/x
  3. Step 3: Cross multiply
    295,807.20x = 443,710.80 × 278,311.20
  4. Step 4: Simplify right side
    295,807.20x = 123,489,685,200.96
  5. Step 5: Solve for x
    x = 123,489,685,200.96/295,807.20
  6. Step 6: Final answer
    x = 417,466.80

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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.