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Finding the Fourth Proportional to 358,883.80, 537,288.90 and 218,915.80

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Solution

The fourth proportional to 358,883.80, 537,288.90 and 218,915.80 is: 327,741.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,883.80 : 537,288.90 = 218,915.80 : x
  2. Step 2: Convert to fraction form
    358,883.80/537,288.90 = 218,915.80/x
  3. Step 3: Cross multiply
    358,883.80x = 537,288.90 × 218,915.80
  4. Step 4: Simplify right side
    358,883.80x = 117,621,029,374.62
  5. Step 5: Solve for x
    x = 117,621,029,374.62/358,883.80
  6. Step 6: Final answer
    x = 327,741.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.