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Finding the Fourth Proportional to 354,666.48, 489,246.12 and 227,198.40

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Solution

The fourth proportional to 354,666.48, 489,246.12 and 227,198.40 is: 313,409.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,666.48 : 489,246.12 = 227,198.40 : x
  2. Step 2: Convert to fraction form
    354,666.48/489,246.12 = 227,198.40/x
  3. Step 3: Cross multiply
    354,666.48x = 489,246.12 × 227,198.40
  4. Step 4: Simplify right side
    354,666.48x = 111,155,935,670.21
  5. Step 5: Solve for x
    x = 111,155,935,670.21/354,666.48
  6. Step 6: Final answer
    x = 313,409.76

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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.