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Finding the Fourth Proportional to 208,060.20, 312,090.30 and 173,039.40

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Solution

The fourth proportional to 208,060.20, 312,090.30 and 173,039.40 is: 259,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,060.20 : 312,090.30 = 173,039.40 : x
  2. Step 2: Convert to fraction form
    208,060.20/312,090.30 = 173,039.40/x
  3. Step 3: Cross multiply
    208,060.20x = 312,090.30 × 173,039.40
  4. Step 4: Simplify right side
    208,060.20x = 54,003,918,257.82
  5. Step 5: Solve for x
    x = 54,003,918,257.82/208,060.20
  6. Step 6: Final answer
    x = 259,559.10

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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.