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Finding the Fourth Proportional to 353,377.60, 528,770.40 and 260,065.60

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Solution

The fourth proportional to 353,377.60, 528,770.40 and 260,065.60 is: 389,144.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,377.60 : 528,770.40 = 260,065.60 : x
  2. Step 2: Convert to fraction form
    353,377.60/528,770.40 = 260,065.60/x
  3. Step 3: Cross multiply
    353,377.60x = 528,770.40 × 260,065.60
  4. Step 4: Simplify right side
    353,377.60x = 137,514,991,338.24
  5. Step 5: Solve for x
    x = 137,514,991,338.24/353,377.60
  6. Step 6: Final answer
    x = 389,144.62

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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.