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Finding the Fourth Proportional to 238,966.80, 358,450.20 and 228,728.40

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Solution

The fourth proportional to 238,966.80, 358,450.20 and 228,728.40 is: 343,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,966.80 : 358,450.20 = 228,728.40 : x
  2. Step 2: Convert to fraction form
    238,966.80/358,450.20 = 228,728.40/x
  3. Step 3: Cross multiply
    238,966.80x = 358,450.20 × 228,728.40
  4. Step 4: Simplify right side
    238,966.80x = 81,987,740,725.68
  5. Step 5: Solve for x
    x = 81,987,740,725.68/238,966.80
  6. Step 6: Final answer
    x = 343,092.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.