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Finding the Fourth Proportional to 353,294.10, 529,163.55 and 212,807.70

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Solution

The fourth proportional to 353,294.10, 529,163.55 and 212,807.70 is: 318,743.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,294.10 : 529,163.55 = 212,807.70 : x
  2. Step 2: Convert to fraction form
    353,294.10/529,163.55 = 212,807.70/x
  3. Step 3: Cross multiply
    353,294.10x = 529,163.55 × 212,807.70
  4. Step 4: Simplify right side
    353,294.10x = 112,610,077,999.34
  5. Step 5: Solve for x
    x = 112,610,077,999.34/353,294.10
  6. Step 6: Final answer
    x = 318,743.16

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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.