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Finding the Fourth Proportional to 355,709.20, 532,251.60 and 324,216.40

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Solution

The fourth proportional to 355,709.20, 532,251.60 and 324,216.40 is: 485,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,709.20 : 532,251.60 = 324,216.40 : x
  2. Step 2: Convert to fraction form
    355,709.20/532,251.60 = 324,216.40/x
  3. Step 3: Cross multiply
    355,709.20x = 532,251.60 × 324,216.40
  4. Step 4: Simplify right side
    355,709.20x = 172,564,697,646.24
  5. Step 5: Solve for x
    x = 172,564,697,646.24/355,709.20
  6. Step 6: Final answer
    x = 485,128.58

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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.