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Finding the Fourth Proportional to 355,300.90, 490,321.65 and 194,162.74

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Solution

The fourth proportional to 355,300.90, 490,321.65 and 194,162.74 is: 267,948.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,300.90 : 490,321.65 = 194,162.74 : x
  2. Step 2: Convert to fraction form
    355,300.90/490,321.65 = 194,162.74/x
  3. Step 3: Cross multiply
    355,300.90x = 490,321.65 × 194,162.74
  4. Step 4: Simplify right side
    355,300.90x = 95,202,194,547.63
  5. Step 5: Solve for x
    x = 95,202,194,547.63/355,300.90
  6. Step 6: Final answer
    x = 267,948.08

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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.