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Finding the Fourth Proportional to 353,969.94, 531,032.62 and 260,191.38

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Solution

The fourth proportional to 353,969.94, 531,032.62 and 260,191.38 is: 390,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,969.94 : 531,032.62 = 260,191.38 : x
  2. Step 2: Convert to fraction form
    353,969.94/531,032.62 = 260,191.38/x
  3. Step 3: Cross multiply
    353,969.94x = 531,032.62 × 260,191.38
  4. Step 4: Simplify right side
    353,969.94x = 138,170,110,222.82
  5. Step 5: Solve for x
    x = 138,170,110,222.82/353,969.94
  6. Step 6: Final answer
    x = 390,344.19

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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.