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Finding the Fourth Proportional to 281,374.89, 388,297.17 and 154,050.45

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Solution

The fourth proportional to 281,374.89, 388,297.17 and 154,050.45 is: 212,589.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,374.89 : 388,297.17 = 154,050.45 : x
  2. Step 2: Convert to fraction form
    281,374.89/388,297.17 = 154,050.45/x
  3. Step 3: Cross multiply
    281,374.89x = 388,297.17 × 154,050.45
  4. Step 4: Simplify right side
    281,374.89x = 59,817,353,772.23
  5. Step 5: Solve for x
    x = 59,817,353,772.23/281,374.89
  6. Step 6: Final answer
    x = 212,589.52

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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.