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Finding the Fourth Proportional to 448,257.60, 671,608.80 and 290,404.80

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Solution

The fourth proportional to 448,257.60, 671,608.80 and 290,404.80 is: 435,103.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,257.60 : 671,608.80 = 290,404.80 : x
  2. Step 2: Convert to fraction form
    448,257.60/671,608.80 = 290,404.80/x
  3. Step 3: Cross multiply
    448,257.60x = 671,608.80 × 290,404.80
  4. Step 4: Simplify right side
    448,257.60x = 195,038,419,242.24
  5. Step 5: Solve for x
    x = 195,038,419,242.24/448,257.60
  6. Step 6: Final answer
    x = 435,103.43

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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.