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Finding the Fourth Proportional to 281,853.12, 388,976.94 and 154,536.94

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Solution

The fourth proportional to 281,853.12, 388,976.94 and 154,536.94 is: 213,271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,853.12 : 388,976.94 = 154,536.94 : x
  2. Step 2: Convert to fraction form
    281,853.12/388,976.94 = 154,536.94/x
  3. Step 3: Cross multiply
    281,853.12x = 388,976.94 × 154,536.94
  4. Step 4: Simplify right side
    281,853.12x = 60,111,306,038.16
  5. Step 5: Solve for x
    x = 60,111,306,038.16/281,853.12
  6. Step 6: Final answer
    x = 213,271.74

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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.