Home / 311,319.15-466,415.57-142,980.30

Finding the Fourth Proportional to 311,319.15, 466,415.57 and 142,980.30

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Solution

The fourth proportional to 311,319.15, 466,415.57 and 142,980.30 is: 214,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,319.15 : 466,415.57 = 142,980.30 : x
  2. Step 2: Convert to fraction form
    311,319.15/466,415.57 = 142,980.30/x
  3. Step 3: Cross multiply
    311,319.15x = 466,415.57 × 142,980.30
  4. Step 4: Simplify right side
    311,319.15x = 66,688,237,408.37
  5. Step 5: Solve for x
    x = 66,688,237,408.37/311,319.15
  6. Step 6: Final answer
    x = 214,211.81

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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.