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Finding the Fourth Proportional to 328,470.40, 492,705.60 and 186,169.60

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Solution

The fourth proportional to 328,470.40, 492,705.60 and 186,169.60 is: 279,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,470.40 : 492,705.60 = 186,169.60 : x
  2. Step 2: Convert to fraction form
    328,470.40/492,705.60 = 186,169.60/x
  3. Step 3: Cross multiply
    328,470.40x = 492,705.60 × 186,169.60
  4. Step 4: Simplify right side
    328,470.40x = 91,726,804,469.76
  5. Step 5: Solve for x
    x = 91,726,804,469.76/328,470.40
  6. Step 6: Final answer
    x = 279,254.40

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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.