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Finding the Fourth Proportional to 395,518.50, 545,812.20 and 214,226.16

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Solution

The fourth proportional to 395,518.50, 545,812.20 and 214,226.16 is: 295,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,518.50 : 545,812.20 = 214,226.16 : x
  2. Step 2: Convert to fraction form
    395,518.50/545,812.20 = 214,226.16/x
  3. Step 3: Cross multiply
    395,518.50x = 545,812.20 × 214,226.16
  4. Step 4: Simplify right side
    395,518.50x = 116,927,251,687.15
  5. Step 5: Solve for x
    x = 116,927,251,687.15/395,518.50
  6. Step 6: Final answer
    x = 295,630.30

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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.