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Finding the Fourth Proportional to 355,085.76, 532,311.84 and 130,394.64

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Solution

The fourth proportional to 355,085.76, 532,311.84 and 130,394.64 is: 195,475.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,085.76 : 532,311.84 = 130,394.64 : x
  2. Step 2: Convert to fraction form
    355,085.76/532,311.84 = 130,394.64/x
  3. Step 3: Cross multiply
    355,085.76x = 532,311.84 × 130,394.64
  4. Step 4: Simplify right side
    355,085.76x = 69,410,610,744.54
  5. Step 5: Solve for x
    x = 69,410,610,744.54/355,085.76
  6. Step 6: Final answer
    x = 195,475.62

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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.