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Finding the Fourth Proportional to 208,002.80, 312,004.20 and 158,850.80

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Solution

The fourth proportional to 208,002.80, 312,004.20 and 158,850.80 is: 238,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,002.80 : 312,004.20 = 158,850.80 : x
  2. Step 2: Convert to fraction form
    208,002.80/312,004.20 = 158,850.80/x
  3. Step 3: Cross multiply
    208,002.80x = 312,004.20 × 158,850.80
  4. Step 4: Simplify right side
    208,002.80x = 49,562,116,773.36
  5. Step 5: Solve for x
    x = 49,562,116,773.36/208,002.80
  6. Step 6: Final answer
    x = 238,276.20

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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.