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Finding the Fourth Proportional to 216,889.62, 299,307.60 and 121,396.34

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Solution

The fourth proportional to 216,889.62, 299,307.60 and 121,396.34 is: 167,526.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,889.62 : 299,307.60 = 121,396.34 : x
  2. Step 2: Convert to fraction form
    216,889.62/299,307.60 = 121,396.34/x
  3. Step 3: Cross multiply
    216,889.62x = 299,307.60 × 121,396.34
  4. Step 4: Simplify right side
    216,889.62x = 36,334,847,174.18
  5. Step 5: Solve for x
    x = 36,334,847,174.18/216,889.62
  6. Step 6: Final answer
    x = 167,526.91

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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.