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Finding the Fourth Proportional to 328,233.60, 492,350.40 and 280,994.40

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Solution

The fourth proportional to 328,233.60, 492,350.40 and 280,994.40 is: 421,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,233.60 : 492,350.40 = 280,994.40 : x
  2. Step 2: Convert to fraction form
    328,233.60/492,350.40 = 280,994.40/x
  3. Step 3: Cross multiply
    328,233.60x = 492,350.40 × 280,994.40
  4. Step 4: Simplify right side
    328,233.60x = 138,347,705,237.76
  5. Step 5: Solve for x
    x = 138,347,705,237.76/328,233.60
  6. Step 6: Final answer
    x = 421,491.60

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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.