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Finding the Fourth Proportional to 281,418.82, 388,358.60 and 152,358.64

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Solution

The fourth proportional to 281,418.82, 388,358.60 and 152,358.64 is: 210,255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,418.82 : 388,358.60 = 152,358.64 : x
  2. Step 2: Convert to fraction form
    281,418.82/388,358.60 = 152,358.64/x
  3. Step 3: Cross multiply
    281,418.82x = 388,358.60 × 152,358.64
  4. Step 4: Simplify right side
    281,418.82x = 59,169,788,128.30
  5. Step 5: Solve for x
    x = 59,169,788,128.30/281,418.82
  6. Step 6: Final answer
    x = 210,255.26

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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.