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Finding the Fourth Proportional to 281,520.32, 388,494.31 and 154,196.02

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Solution

The fourth proportional to 281,520.32, 388,494.31 and 154,196.02 is: 212,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,520.32 : 388,494.31 = 154,196.02 : x
  2. Step 2: Convert to fraction form
    281,520.32/388,494.31 = 154,196.02/x
  3. Step 3: Cross multiply
    281,520.32x = 388,494.31 × 154,196.02
  4. Step 4: Simplify right side
    281,520.32x = 59,904,273,681.19
  5. Step 5: Solve for x
    x = 59,904,273,681.19/281,520.32
  6. Step 6: Final answer
    x = 212,788.45

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