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Finding the Fourth Proportional to 355,451.10, 532,485.45 and 197,396.70

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Solution

The fourth proportional to 355,451.10, 532,485.45 and 197,396.70 is: 295,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,451.10 : 532,485.45 = 197,396.70 : x
  2. Step 2: Convert to fraction form
    355,451.10/532,485.45 = 197,396.70/x
  3. Step 3: Cross multiply
    355,451.10x = 532,485.45 × 197,396.70
  4. Step 4: Simplify right side
    355,451.10x = 105,110,870,628.02
  5. Step 5: Solve for x
    x = 105,110,870,628.02/355,451.10
  6. Step 6: Final answer
    x = 295,711.20

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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.