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Finding the Fourth Proportional to 289,819.55, 399,855.35 and 175,055.31

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Solution

The fourth proportional to 289,819.55, 399,855.35 and 175,055.31 is: 241,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,819.55 : 399,855.35 = 175,055.31 : x
  2. Step 2: Convert to fraction form
    289,819.55/399,855.35 = 175,055.31/x
  3. Step 3: Cross multiply
    289,819.55x = 399,855.35 × 175,055.31
  4. Step 4: Simplify right side
    289,819.55x = 69,996,802,687.05
  5. Step 5: Solve for x
    x = 69,996,802,687.05/289,819.55
  6. Step 6: Final answer
    x = 241,518.57

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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.