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Finding the Fourth Proportional to 216,407.88, 298,637.28 and 120,915.27

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Solution

The fourth proportional to 216,407.88, 298,637.28 and 120,915.27 is: 166,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,407.88 : 298,637.28 = 120,915.27 : x
  2. Step 2: Convert to fraction form
    216,407.88/298,637.28 = 120,915.27/x
  3. Step 3: Cross multiply
    216,407.88x = 298,637.28 × 120,915.27
  4. Step 4: Simplify right side
    216,407.88x = 36,109,807,343.27
  5. Step 5: Solve for x
    x = 36,109,807,343.27/216,407.88
  6. Step 6: Final answer
    x = 166,859.95

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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.