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Finding the Fourth Proportional to 209,358.88, 314,090.93 and 67,216.87

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Solution

The fourth proportional to 209,358.88, 314,090.93 and 67,216.87 is: 100,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,358.88 : 314,090.93 = 67,216.87 : x
  2. Step 2: Convert to fraction form
    209,358.88/314,090.93 = 67,216.87/x
  3. Step 3: Cross multiply
    209,358.88x = 314,090.93 × 67,216.87
  4. Step 4: Simplify right side
    209,358.88x = 21,112,209,770.64
  5. Step 5: Solve for x
    x = 21,112,209,770.64/209,358.88
  6. Step 6: Final answer
    x = 100,842.20

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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.