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Finding the Fourth Proportional to 262,146.95, 393,156.51 and 72,602.39

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Solution

The fourth proportional to 262,146.95, 393,156.51 and 72,602.39 is: 108,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,146.95 : 393,156.51 = 72,602.39 : x
  2. Step 2: Convert to fraction form
    262,146.95/393,156.51 = 72,602.39/x
  3. Step 3: Cross multiply
    262,146.95x = 393,156.51 × 72,602.39
  4. Step 4: Simplify right side
    262,146.95x = 28,544,100,304.28
  5. Step 5: Solve for x
    x = 28,544,100,304.28/262,146.95
  6. Step 6: Final answer
    x = 108,885.88

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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.