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Finding the Fourth Proportional to 557,051.82, 768,740.85 and 302,403

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Solution

The fourth proportional to 557,051.82, 768,740.85 and 302,403 is: 417,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,051.82 : 768,740.85 = 302,403 : x
  2. Step 2: Convert to fraction form
    557,051.82/768,740.85 = 302,403/x
  3. Step 3: Cross multiply
    557,051.82x = 768,740.85 × 302,403
  4. Step 4: Simplify right side
    557,051.82x = 232,469,539,262.55
  5. Step 5: Solve for x
    x = 232,469,539,262.55/557,051.82
  6. Step 6: Final answer
    x = 417,321.21

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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.