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Finding the Fourth Proportional to 340,396.65, 469,743.30 and 187,431.53

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Solution

The fourth proportional to 340,396.65, 469,743.30 and 187,431.53 is: 258,653.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,396.65 : 469,743.30 = 187,431.53 : x
  2. Step 2: Convert to fraction form
    340,396.65/469,743.30 = 187,431.53/x
  3. Step 3: Cross multiply
    340,396.65x = 469,743.30 × 187,431.53
  4. Step 4: Simplify right side
    340,396.65x = 88,044,703,077.53
  5. Step 5: Solve for x
    x = 88,044,703,077.53/340,396.65
  6. Step 6: Final answer
    x = 258,653.26

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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.