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Finding the Fourth Proportional to 353,017.60, 528,230.40 and 259,705.60

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Solution

The fourth proportional to 353,017.60, 528,230.40 and 259,705.60 is: 388,604.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,017.60 : 528,230.40 = 259,705.60 : x
  2. Step 2: Convert to fraction form
    353,017.60/528,230.40 = 259,705.60/x
  3. Step 3: Cross multiply
    353,017.60x = 528,230.40 × 259,705.60
  4. Step 4: Simplify right side
    353,017.60x = 137,184,392,970.24
  5. Step 5: Solve for x
    x = 137,184,392,970.24/353,017.60
  6. Step 6: Final answer
    x = 388,604.97

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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.