Home / 289,369.07-399,196.62-187,427.30

Finding the Fourth Proportional to 289,369.07, 399,196.62 and 187,427.30

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Solution

The fourth proportional to 289,369.07, 399,196.62 and 187,427.30 is: 258,563.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,369.07 : 399,196.62 = 187,427.30 : x
  2. Step 2: Convert to fraction form
    289,369.07/399,196.62 = 187,427.30/x
  3. Step 3: Cross multiply
    289,369.07x = 399,196.62 × 187,427.30
  4. Step 4: Simplify right side
    289,369.07x = 74,820,342,659.74
  5. Step 5: Solve for x
    x = 74,820,342,659.74/289,369.07
  6. Step 6: Final answer
    x = 258,563.72

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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.