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Finding the Fourth Proportional to 505,249.42, 697,244.82 and 278,894.92

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Solution

The fourth proportional to 505,249.42, 697,244.82 and 278,894.92 is: 384,875.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,249.42 : 697,244.82 = 278,894.92 : x
  2. Step 2: Convert to fraction form
    505,249.42/697,244.82 = 278,894.92/x
  3. Step 3: Cross multiply
    505,249.42x = 697,244.82 × 278,894.92
  4. Step 4: Simplify right side
    505,249.42x = 194,458,038,294.31
  5. Step 5: Solve for x
    x = 194,458,038,294.31/505,249.42
  6. Step 6: Final answer
    x = 384,875.33

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Double scale
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Similar ratio
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1.5x scale

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.