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Finding the Fourth Proportional to 294,003.30, 440,020.80 and 258,573.90

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Solution

The fourth proportional to 294,003.30, 440,020.80 and 258,573.90 is: 386,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,003.30 : 440,020.80 = 258,573.90 : x
  2. Step 2: Convert to fraction form
    294,003.30/440,020.80 = 258,573.90/x
  3. Step 3: Cross multiply
    294,003.30x = 440,020.80 × 258,573.90
  4. Step 4: Simplify right side
    294,003.30x = 113,777,894,337.12
  5. Step 5: Solve for x
    x = 113,777,894,337.12/294,003.30
  6. Step 6: Final answer
    x = 386,995.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.