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Finding the Fourth Proportional to 212,173.82, 318,260.72 and 101,028.86

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Solution

The fourth proportional to 212,173.82, 318,260.72 and 101,028.86 is: 151,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,173.82 : 318,260.72 = 101,028.86 : x
  2. Step 2: Convert to fraction form
    212,173.82/318,260.72 = 101,028.86/x
  3. Step 3: Cross multiply
    212,173.82x = 318,260.72 × 101,028.86
  4. Step 4: Simplify right side
    212,173.82x = 32,153,516,385.65
  5. Step 5: Solve for x
    x = 32,153,516,385.65/212,173.82
  6. Step 6: Final answer
    x = 151,543.28

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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.