Home / 638,929.89-958,293.27-212,430.24

Finding the Fourth Proportional to 638,929.89, 958,293.27 and 212,430.24

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Solution

The fourth proportional to 638,929.89, 958,293.27 and 212,430.24 is: 318,611.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,929.89 : 958,293.27 = 212,430.24 : x
  2. Step 2: Convert to fraction form
    638,929.89/958,293.27 = 212,430.24/x
  3. Step 3: Cross multiply
    638,929.89x = 958,293.27 × 212,430.24
  4. Step 4: Simplify right side
    638,929.89x = 203,570,469,336.49
  5. Step 5: Solve for x
    x = 203,570,469,336.49/638,929.89
  6. Step 6: Final answer
    x = 318,611.59

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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.