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Finding the Fourth Proportional to 471,385.20, 707,077.80 and 303,423.60

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Solution

The fourth proportional to 471,385.20, 707,077.80 and 303,423.60 is: 455,135.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,385.20 : 707,077.80 = 303,423.60 : x
  2. Step 2: Convert to fraction form
    471,385.20/707,077.80 = 303,423.60/x
  3. Step 3: Cross multiply
    471,385.20x = 707,077.80 × 303,423.60
  4. Step 4: Simplify right side
    471,385.20x = 214,544,091,556.08
  5. Step 5: Solve for x
    x = 214,544,091,556.08/471,385.20
  6. Step 6: Final answer
    x = 455,135.40

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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.