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Finding the Fourth Proportional to 238,879.20, 358,318.80 and 213,074.40

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Solution

The fourth proportional to 238,879.20, 358,318.80 and 213,074.40 is: 319,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,879.20 : 358,318.80 = 213,074.40 : x
  2. Step 2: Convert to fraction form
    238,879.20/358,318.80 = 213,074.40/x
  3. Step 3: Cross multiply
    238,879.20x = 358,318.80 × 213,074.40
  4. Step 4: Simplify right side
    238,879.20x = 76,348,563,318.72
  5. Step 5: Solve for x
    x = 76,348,563,318.72/238,879.20
  6. Step 6: Final answer
    x = 319,611.60

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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.