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Finding the Fourth Proportional to 353,517.60, 528,980.40 and 260,205.60

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Solution

The fourth proportional to 353,517.60, 528,980.40 and 260,205.60 is: 389,354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,517.60 : 528,980.40 = 260,205.60 : x
  2. Step 2: Convert to fraction form
    353,517.60/528,980.40 = 260,205.60/x
  3. Step 3: Cross multiply
    353,517.60x = 528,980.40 × 260,205.60
  4. Step 4: Simplify right side
    353,517.60x = 137,643,662,370.24
  5. Step 5: Solve for x
    x = 137,643,662,370.24/353,517.60
  6. Step 6: Final answer
    x = 389,354.48

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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.