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Finding the Fourth Proportional to 216,468.32, 298,720.68 and 120,975.80

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Solution

The fourth proportional to 216,468.32, 298,720.68 and 120,975.80 is: 166,943.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,468.32 : 298,720.68 = 120,975.80 : x
  2. Step 2: Convert to fraction form
    216,468.32/298,720.68 = 120,975.80/x
  3. Step 3: Cross multiply
    216,468.32x = 298,720.68 × 120,975.80
  4. Step 4: Simplify right side
    216,468.32x = 36,137,973,239.54
  5. Step 5: Solve for x
    x = 36,137,973,239.54/216,468.32
  6. Step 6: Final answer
    x = 166,943.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.