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Finding the Fourth Proportional to 281,737.85, 388,799.39 and 154,415.57

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Solution

The fourth proportional to 281,737.85, 388,799.39 and 154,415.57 is: 213,094.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,737.85 : 388,799.39 = 154,415.57 : x
  2. Step 2: Convert to fraction form
    281,737.85/388,799.39 = 154,415.57/x
  3. Step 3: Cross multiply
    281,737.85x = 388,799.39 × 154,415.57
  4. Step 4: Simplify right side
    281,737.85x = 60,036,677,864.54
  5. Step 5: Solve for x
    x = 60,036,677,864.54/281,737.85
  6. Step 6: Final answer
    x = 213,094.12

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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.