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Finding the Fourth Proportional to 555,410.19, 766,465.88 and 300,761.31

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Solution

The fourth proportional to 555,410.19, 766,465.88 and 300,761.31 is: 415,050.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,410.19 : 766,465.88 = 300,761.31 : x
  2. Step 2: Convert to fraction form
    555,410.19/766,465.88 = 300,761.31/x
  3. Step 3: Cross multiply
    555,410.19x = 766,465.88 × 300,761.31
  4. Step 4: Simplify right side
    555,410.19x = 230,523,280,635.30
  5. Step 5: Solve for x
    x = 230,523,280,635.30/555,410.19
  6. Step 6: Final answer
    x = 415,050.51

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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.