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Finding the Fourth Proportional to 289,170.77, 399,205.44 and 180,307.37

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Solution

The fourth proportional to 289,170.77, 399,205.44 and 180,307.37 is: 248,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,170.77 : 399,205.44 = 180,307.37 : x
  2. Step 2: Convert to fraction form
    289,170.77/399,205.44 = 180,307.37/x
  3. Step 3: Cross multiply
    289,170.77x = 399,205.44 × 180,307.37
  4. Step 4: Simplify right side
    289,170.77x = 71,979,680,980.07
  5. Step 5: Solve for x
    x = 71,979,680,980.07/289,170.77
  6. Step 6: Final answer
    x = 248,917.56

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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.