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Finding the Fourth Proportional to 305,558.90, 459,029.55 and 212,246.90

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Solution

The fourth proportional to 305,558.90, 459,029.55 and 212,246.90 is: 318,850.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,558.90 : 459,029.55 = 212,246.90 : x
  2. Step 2: Convert to fraction form
    305,558.90/459,029.55 = 212,246.90/x
  3. Step 3: Cross multiply
    305,558.90x = 459,029.55 × 212,246.90
  4. Step 4: Simplify right side
    305,558.90x = 97,427,598,995.90
  5. Step 5: Solve for x
    x = 97,427,598,995.90/305,558.90
  6. Step 6: Final answer
    x = 318,850.47

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1.5x scale

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.