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Finding the Fourth Proportional to 353,169.64, 528,937.98 and 212,618.44

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Solution

The fourth proportional to 353,169.64, 528,937.98 and 212,618.44 is: 318,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,169.64 : 528,937.98 = 212,618.44 : x
  2. Step 2: Convert to fraction form
    353,169.64/528,937.98 = 212,618.44/x
  3. Step 3: Cross multiply
    353,169.64x = 528,937.98 × 212,618.44
  4. Step 4: Simplify right side
    353,169.64x = 112,461,968,164.35
  5. Step 5: Solve for x
    x = 112,461,968,164.35/353,169.64
  6. Step 6: Final answer
    x = 318,436.12

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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.