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Finding the Fourth Proportional to 350,453.60, 525,718.80 and 339,394.40

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Solution

The fourth proportional to 350,453.60, 525,718.80 and 339,394.40 is: 509,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,453.60 : 525,718.80 = 339,394.40 : x
  2. Step 2: Convert to fraction form
    350,453.60/525,718.80 = 339,394.40/x
  3. Step 3: Cross multiply
    350,453.60x = 525,718.80 × 339,394.40
  4. Step 4: Simplify right side
    350,453.60x = 178,426,016,694.72
  5. Step 5: Solve for x
    x = 178,426,016,694.72/350,453.60
  6. Step 6: Final answer
    x = 509,128.79

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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.