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Finding the Fourth Proportional to 355,440.65, 490,507.95 and 194,296.31

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Solution

The fourth proportional to 355,440.65, 490,507.95 and 194,296.31 is: 268,128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,440.65 : 490,507.95 = 194,296.31 : x
  2. Step 2: Convert to fraction form
    355,440.65/490,507.95 = 194,296.31/x
  3. Step 3: Cross multiply
    355,440.65x = 490,507.95 × 194,296.31
  4. Step 4: Simplify right side
    355,440.65x = 95,303,882,258.12
  5. Step 5: Solve for x
    x = 95,303,882,258.12/355,440.65
  6. Step 6: Final answer
    x = 268,128.82

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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.