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Finding the Fourth Proportional to 291,605.52, 435,810.52 and 212,885.52

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Solution

The fourth proportional to 291,605.52, 435,810.52 and 212,885.52 is: 318,161.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,605.52 : 435,810.52 = 212,885.52 : x
  2. Step 2: Convert to fraction form
    291,605.52/435,810.52 = 212,885.52/x
  3. Step 3: Cross multiply
    291,605.52x = 435,810.52 × 212,885.52
  4. Step 4: Simplify right side
    291,605.52x = 92,777,749,171.67
  5. Step 5: Solve for x
    x = 92,777,749,171.67/291,605.52
  6. Step 6: Final answer
    x = 318,161.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.