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Finding the Fourth Proportional to 555,000.80, 765,903.53 and 300,352.02

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Solution

The fourth proportional to 555,000.80, 765,903.53 and 300,352.02 is: 414,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,000.80 : 765,903.53 = 300,352.02 : x
  2. Step 2: Convert to fraction form
    555,000.80/765,903.53 = 300,352.02/x
  3. Step 3: Cross multiply
    555,000.80x = 765,903.53 × 300,352.02
  4. Step 4: Simplify right side
    555,000.80x = 230,040,672,360.63
  5. Step 5: Solve for x
    x = 230,040,672,360.63/555,000.80
  6. Step 6: Final answer
    x = 414,487.10

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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.