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Finding the Fourth Proportional to 289,207.40, 433,235.10 and 254,570.60

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Solution

The fourth proportional to 289,207.40, 433,235.10 and 254,570.60 is: 381,348.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,207.40 : 433,235.10 = 254,570.60 : x
  2. Step 2: Convert to fraction form
    289,207.40/433,235.10 = 254,570.60/x
  3. Step 3: Cross multiply
    289,207.40x = 433,235.10 × 254,570.60
  4. Step 4: Simplify right side
    289,207.40x = 110,288,919,348.06
  5. Step 5: Solve for x
    x = 110,288,919,348.06/289,207.40
  6. Step 6: Final answer
    x = 381,348.88

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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.