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Finding the Fourth Proportional to 291,701.55, 436,580.33 and 211,511.55

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Solution

The fourth proportional to 291,701.55, 436,580.33 and 211,511.55 is: 316,562.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,701.55 : 436,580.33 = 211,511.55 : x
  2. Step 2: Convert to fraction form
    291,701.55/436,580.33 = 211,511.55/x
  3. Step 3: Cross multiply
    291,701.55x = 436,580.33 × 211,511.55
  4. Step 4: Simplify right side
    291,701.55x = 92,341,781,240.25
  5. Step 5: Solve for x
    x = 92,341,781,240.25/291,701.55
  6. Step 6: Final answer
    x = 316,562.53

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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.