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Finding the Fourth Proportional to 353,342.91, 487,568.94 and 238,870.65

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Solution

The fourth proportional to 353,342.91, 487,568.94 and 238,870.65 is: 329,611.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,342.91 : 487,568.94 = 238,870.65 : x
  2. Step 2: Convert to fraction form
    353,342.91/487,568.94 = 238,870.65/x
  3. Step 3: Cross multiply
    353,342.91x = 487,568.94 × 238,870.65
  4. Step 4: Simplify right side
    353,342.91x = 116,465,909,617.61
  5. Step 5: Solve for x
    x = 116,465,909,617.61/353,342.91
  6. Step 6: Final answer
    x = 329,611.57

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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.