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Finding the Fourth Proportional to 216,168.89, 298,300.64 and 120,681.63

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Solution

The fourth proportional to 216,168.89, 298,300.64 and 120,681.63 is: 166,533.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,168.89 : 298,300.64 = 120,681.63 : x
  2. Step 2: Convert to fraction form
    216,168.89/298,300.64 = 120,681.63/x
  3. Step 3: Cross multiply
    216,168.89x = 298,300.64 × 120,681.63
  4. Step 4: Simplify right side
    216,168.89x = 35,999,406,861.84
  5. Step 5: Solve for x
    x = 35,999,406,861.84/216,168.89
  6. Step 6: Final answer
    x = 166,533.71

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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.