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Finding the Fourth Proportional to 281,838.72, 388,937.34 and 154,511.58

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Solution

The fourth proportional to 281,838.72, 388,937.34 and 154,511.58 is: 213,225.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,838.72 : 388,937.34 = 154,511.58 : x
  2. Step 2: Convert to fraction form
    281,838.72/388,937.34 = 154,511.58/x
  3. Step 3: Cross multiply
    281,838.72x = 388,937.34 × 154,511.58
  4. Step 4: Simplify right side
    281,838.72x = 60,095,322,924.40
  5. Step 5: Solve for x
    x = 60,095,322,924.40/281,838.72
  6. Step 6: Final answer
    x = 213,225.93

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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.