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Finding the Fourth Proportional to 281,429.59, 388,358.40 and 154,080.58

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Solution

The fourth proportional to 281,429.59, 388,358.40 and 154,080.58 is: 212,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,429.59 : 388,358.40 = 154,080.58 : x
  2. Step 2: Convert to fraction form
    281,429.59/388,358.40 = 154,080.58/x
  3. Step 3: Cross multiply
    281,429.59x = 388,358.40 × 154,080.58
  4. Step 4: Simplify right side
    281,429.59x = 59,838,487,519.87
  5. Step 5: Solve for x
    x = 59,838,487,519.87/281,429.59
  6. Step 6: Final answer
    x = 212,623.30

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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.