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Finding the Fourth Proportional to 281,878.04, 388,988.88 and 154,553.34

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Solution

The fourth proportional to 281,878.04, 388,988.88 and 154,553.34 is: 213,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,878.04 : 388,988.88 = 154,553.34 : x
  2. Step 2: Convert to fraction form
    281,878.04/388,988.88 = 154,553.34/x
  3. Step 3: Cross multiply
    281,878.04x = 388,988.88 × 154,553.34
  4. Step 4: Simplify right side
    281,878.04x = 60,119,530,626.86
  5. Step 5: Solve for x
    x = 60,119,530,626.86/281,878.04
  6. Step 6: Final answer
    x = 213,282.07

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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.