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Finding the Fourth Proportional to 555,230.12, 766,217.81 and 300,581.30

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Solution

The fourth proportional to 555,230.12, 766,217.81 and 300,581.30 is: 414,802.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,230.12 : 766,217.81 = 300,581.30 : x
  2. Step 2: Convert to fraction form
    555,230.12/766,217.81 = 300,581.30/x
  3. Step 3: Cross multiply
    555,230.12x = 766,217.81 × 300,581.30
  4. Step 4: Simplify right side
    555,230.12x = 230,310,748,079.95
  5. Step 5: Solve for x
    x = 230,310,748,079.95/555,230.12
  6. Step 6: Final answer
    x = 414,802.33

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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.