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Finding the Fourth Proportional to 281,367.98, 388,288.95 and 154,055.42

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Solution

The fourth proportional to 281,367.98, 388,288.95 and 154,055.42 is: 212,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,367.98 : 388,288.95 = 154,055.42 : x
  2. Step 2: Convert to fraction form
    281,367.98/388,288.95 = 154,055.42/x
  3. Step 3: Cross multiply
    281,367.98x = 388,288.95 × 154,055.42
  4. Step 4: Simplify right side
    281,367.98x = 59,818,017,273.61
  5. Step 5: Solve for x
    x = 59,818,017,273.61/281,367.98
  6. Step 6: Final answer
    x = 212,597.10

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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.