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Finding the Fourth Proportional to 355,538.20, 533,652.90 and 215,570.20

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Solution

The fourth proportional to 355,538.20, 533,652.90 and 215,570.20 is: 323,564.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,538.20 : 533,652.90 = 215,570.20 : x
  2. Step 2: Convert to fraction form
    355,538.20/533,652.90 = 215,570.20/x
  3. Step 3: Cross multiply
    355,538.20x = 533,652.90 × 215,570.20
  4. Step 4: Simplify right side
    355,538.20x = 115,039,662,383.58
  5. Step 5: Solve for x
    x = 115,039,662,383.58/355,538.20
  6. Step 6: Final answer
    x = 323,564.84

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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.