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Finding the Fourth Proportional to 354,653.60, 531,980.40 and 325,623.20

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Solution

The fourth proportional to 354,653.60, 531,980.40 and 325,623.20 is: 488,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,653.60 : 531,980.40 = 325,623.20 : x
  2. Step 2: Convert to fraction form
    354,653.60/531,980.40 = 325,623.20/x
  3. Step 3: Cross multiply
    354,653.60x = 531,980.40 × 325,623.20
  4. Step 4: Simplify right side
    354,653.60x = 173,225,160,185.28
  5. Step 5: Solve for x
    x = 173,225,160,185.28/354,653.60
  6. Step 6: Final answer
    x = 488,434.80

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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.