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Finding the Fourth Proportional to 355,663.65, 490,808.94 and 194,518.20

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Solution

The fourth proportional to 355,663.65, 490,808.94 and 194,518.20 is: 268,431.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,663.65 : 490,808.94 = 194,518.20 : x
  2. Step 2: Convert to fraction form
    355,663.65/490,808.94 = 194,518.20/x
  3. Step 3: Cross multiply
    355,663.65x = 490,808.94 × 194,518.20
  4. Step 4: Simplify right side
    355,663.65x = 95,471,271,552.71
  5. Step 5: Solve for x
    x = 95,471,271,552.71/355,663.65
  6. Step 6: Final answer
    x = 268,431.34

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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.