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Finding the Fourth Proportional to 555,231.54, 766,219.78 and 300,582.72

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Solution

The fourth proportional to 555,231.54, 766,219.78 and 300,582.72 is: 414,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,231.54 : 766,219.78 = 300,582.72 : x
  2. Step 2: Convert to fraction form
    555,231.54/766,219.78 = 300,582.72/x
  3. Step 3: Cross multiply
    555,231.54x = 766,219.78 × 300,582.72
  4. Step 4: Simplify right side
    555,231.54x = 230,312,425,590.20
  5. Step 5: Solve for x
    x = 230,312,425,590.20/555,231.54
  6. Step 6: Final answer
    x = 414,804.29

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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.