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Finding the Fourth Proportional to 281,491.79, 388,464.30 and 154,167.39

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Solution

The fourth proportional to 281,491.79, 388,464.30 and 154,167.39 is: 212,754.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,491.79 : 388,464.30 = 154,167.39 : x
  2. Step 2: Convert to fraction form
    281,491.79/388,464.30 = 154,167.39/x
  3. Step 3: Cross multiply
    281,491.79x = 388,464.30 × 154,167.39
  4. Step 4: Simplify right side
    281,491.79x = 59,888,527,239.18
  5. Step 5: Solve for x
    x = 59,888,527,239.18/281,491.79
  6. Step 6: Final answer
    x = 212,754.09

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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.