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Finding the Fourth Proportional to 328,087.60, 492,131.40 and 203,498.80

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Solution

The fourth proportional to 328,087.60, 492,131.40 and 203,498.80 is: 305,248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,087.60 : 492,131.40 = 203,498.80 : x
  2. Step 2: Convert to fraction form
    328,087.60/492,131.40 = 203,498.80/x
  3. Step 3: Cross multiply
    328,087.60x = 492,131.40 × 203,498.80
  4. Step 4: Simplify right side
    328,087.60x = 100,148,149,342.32
  5. Step 5: Solve for x
    x = 100,148,149,342.32/328,087.60
  6. Step 6: Final answer
    x = 305,248.20

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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.