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Finding the Fourth Proportional to 350,557.60, 525,836.40 and 280,573.60

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Solution

The fourth proportional to 350,557.60, 525,836.40 and 280,573.60 is: 420,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,557.60 : 525,836.40 = 280,573.60 : x
  2. Step 2: Convert to fraction form
    350,557.60/525,836.40 = 280,573.60/x
  3. Step 3: Cross multiply
    350,557.60x = 525,836.40 × 280,573.60
  4. Step 4: Simplify right side
    350,557.60x = 147,535,811,759.04
  5. Step 5: Solve for x
    x = 147,535,811,759.04/350,557.60
  6. Step 6: Final answer
    x = 420,860.40

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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.