Home / 212,756.22-319,527.18-142,684.74

Finding the Fourth Proportional to 212,756.22, 319,527.18 and 142,684.74

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Solution

The fourth proportional to 212,756.22, 319,527.18 and 142,684.74 is: 214,290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,756.22 : 319,527.18 = 142,684.74 : x
  2. Step 2: Convert to fraction form
    212,756.22/319,527.18 = 142,684.74/x
  3. Step 3: Cross multiply
    212,756.22x = 319,527.18 × 142,684.74
  4. Step 4: Simplify right side
    212,756.22x = 45,591,652,601.23
  5. Step 5: Solve for x
    x = 45,591,652,601.23/212,756.22
  6. Step 6: Final answer
    x = 214,290.57

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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.