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Finding the Fourth Proportional to 353,309.31, 528,739.25 and 338,612.67

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Solution

The fourth proportional to 353,309.31, 528,739.25 and 338,612.67 is: 506,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,309.31 : 528,739.25 = 338,612.67 : x
  2. Step 2: Convert to fraction form
    353,309.31/528,739.25 = 338,612.67/x
  3. Step 3: Cross multiply
    353,309.31x = 528,739.25 × 338,612.67
  4. Step 4: Simplify right side
    353,309.31x = 179,037,807,483.23
  5. Step 5: Solve for x
    x = 179,037,807,483.23/353,309.31
  6. Step 6: Final answer
    x = 506,745.23

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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.