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Finding the Fourth Proportional to 281,198.55, 388,048.82 and 153,871.59

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Solution

The fourth proportional to 281,198.55, 388,048.82 and 153,871.59 is: 212,339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,198.55 : 388,048.82 = 153,871.59 : x
  2. Step 2: Convert to fraction form
    281,198.55/388,048.82 = 153,871.59/x
  3. Step 3: Cross multiply
    281,198.55x = 388,048.82 × 153,871.59
  4. Step 4: Simplify right side
    281,198.55x = 59,709,688,161.67
  5. Step 5: Solve for x
    x = 59,709,688,161.67/281,198.55
  6. Step 6: Final answer
    x = 212,339.96

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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.