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Finding the Fourth Proportional to 492,055.40, 738,255.90 and 211,658.60

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Solution

The fourth proportional to 492,055.40, 738,255.90 and 211,658.60 is: 317,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,055.40 : 738,255.90 = 211,658.60 : x
  2. Step 2: Convert to fraction form
    492,055.40/738,255.90 = 211,658.60/x
  3. Step 3: Cross multiply
    492,055.40x = 738,255.90 × 211,658.60
  4. Step 4: Simplify right side
    492,055.40x = 156,258,210,235.74
  5. Step 5: Solve for x
    x = 156,258,210,235.74/492,055.40
  6. Step 6: Final answer
    x = 317,562.23

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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.