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Finding the Fourth Proportional to 492,078.45, 738,117.68 and 243,246.45

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Solution

The fourth proportional to 492,078.45, 738,117.68 and 243,246.45 is: 364,869.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,078.45 : 738,117.68 = 243,246.45 : x
  2. Step 2: Convert to fraction form
    492,078.45/738,117.68 = 243,246.45/x
  3. Step 3: Cross multiply
    492,078.45x = 738,117.68 × 243,246.45
  4. Step 4: Simplify right side
    492,078.45x = 179,544,504,126.00
  5. Step 5: Solve for x
    x = 179,544,504,126.00/492,078.45
  6. Step 6: Final answer
    x = 364,869.68

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Similar ratio
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1.5x scale

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.