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Finding the Fourth Proportional to 208,243.51, 312,420.56 and 108,374.16

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Solution

The fourth proportional to 208,243.51, 312,420.56 and 108,374.16 is: 162,590.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,243.51 : 312,420.56 = 108,374.16 : x
  2. Step 2: Convert to fraction form
    208,243.51/312,420.56 = 108,374.16/x
  3. Step 3: Cross multiply
    208,243.51x = 312,420.56 × 108,374.16
  4. Step 4: Simplify right side
    208,243.51x = 33,858,315,756.73
  5. Step 5: Solve for x
    x = 33,858,315,756.73/208,243.51
  6. Step 6: Final answer
    x = 162,590.02

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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.