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Finding the Fourth Proportional to 557,866.89, 769,852.08 and 303,219.90

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Solution

The fourth proportional to 557,866.89, 769,852.08 and 303,219.90 is: 418,441.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,866.89 : 769,852.08 = 303,219.90 : x
  2. Step 2: Convert to fraction form
    557,866.89/769,852.08 = 303,219.90/x
  3. Step 3: Cross multiply
    557,866.89x = 769,852.08 × 303,219.90
  4. Step 4: Simplify right side
    557,866.89x = 233,434,470,712.39
  5. Step 5: Solve for x
    x = 233,434,470,712.39/557,866.89
  6. Step 6: Final answer
    x = 418,441.16

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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.