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Finding the Fourth Proportional to 208,174.80, 312,259.16 and 66,019.80

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Solution

The fourth proportional to 208,174.80, 312,259.16 and 66,019.80 is: 99,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,174.80 : 312,259.16 = 66,019.80 : x
  2. Step 2: Convert to fraction form
    208,174.80/312,259.16 = 66,019.80/x
  3. Step 3: Cross multiply
    208,174.80x = 312,259.16 × 66,019.80
  4. Step 4: Simplify right side
    208,174.80x = 20,615,287,291.37
  5. Step 5: Solve for x
    x = 20,615,287,291.37/208,174.80
  6. Step 6: Final answer
    x = 99,028.74

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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.