Home / 386,830.40-533,817.24-214,738.20

Finding the Fourth Proportional to 386,830.40, 533,817.24 and 214,738.20

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Solution

The fourth proportional to 386,830.40, 533,817.24 and 214,738.20 is: 296,333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,830.40 : 533,817.24 = 214,738.20 : x
  2. Step 2: Convert to fraction form
    386,830.40/533,817.24 = 214,738.20/x
  3. Step 3: Cross multiply
    386,830.40x = 533,817.24 × 214,738.20
  4. Step 4: Simplify right side
    386,830.40x = 114,630,953,246.57
  5. Step 5: Solve for x
    x = 114,630,953,246.57/386,830.40
  6. Step 6: Final answer
    x = 296,333.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.