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Finding the Fourth Proportional to 214,230.40, 321,126.90 and 125,438.20

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Solution

The fourth proportional to 214,230.40, 321,126.90 and 125,438.20 is: 188,029.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,230.40 : 321,126.90 = 125,438.20 : x
  2. Step 2: Convert to fraction form
    214,230.40/321,126.90 = 125,438.20/x
  3. Step 3: Cross multiply
    214,230.40x = 321,126.90 × 125,438.20
  4. Step 4: Simplify right side
    214,230.40x = 40,281,580,307.58
  5. Step 5: Solve for x
    x = 40,281,580,307.58/214,230.40
  6. Step 6: Final answer
    x = 188,029.24

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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.