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Finding the Fourth Proportional to 557,183.55, 768,891.74 and 302,528.91

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Solution

The fourth proportional to 557,183.55, 768,891.74 and 302,528.91 is: 417,478.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,183.55 : 768,891.74 = 302,528.91 : x
  2. Step 2: Convert to fraction form
    557,183.55/768,891.74 = 302,528.91/x
  3. Step 3: Cross multiply
    557,183.55x = 768,891.74 × 302,528.91
  4. Step 4: Simplify right side
    557,183.55x = 232,611,980,010.20
  5. Step 5: Solve for x
    x = 232,611,980,010.20/557,183.55
  6. Step 6: Final answer
    x = 417,478.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.