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Finding the Fourth Proportional to 353,114.10, 528,979.95 and 212,454.90

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Solution

The fourth proportional to 353,114.10, 528,979.95 and 212,454.90 is: 318,266.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,114.10 : 528,979.95 = 212,454.90 : x
  2. Step 2: Convert to fraction form
    353,114.10/528,979.95 = 212,454.90/x
  3. Step 3: Cross multiply
    353,114.10x = 528,979.95 × 212,454.90
  4. Step 4: Simplify right side
    353,114.10x = 112,384,382,379.26
  5. Step 5: Solve for x
    x = 112,384,382,379.26/353,114.10
  6. Step 6: Final answer
    x = 318,266.48

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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.