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Finding the Fourth Proportional to 448,782.60, 619,377.56 and 257,832.90

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Solution

The fourth proportional to 448,782.60, 619,377.56 and 257,832.90 is: 355,842.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,782.60 : 619,377.56 = 257,832.90 : x
  2. Step 2: Convert to fraction form
    448,782.60/619,377.56 = 257,832.90/x
  3. Step 3: Cross multiply
    448,782.60x = 619,377.56 × 257,832.90
  4. Step 4: Simplify right side
    448,782.60x = 159,695,912,489.72
  5. Step 5: Solve for x
    x = 159,695,912,489.72/448,782.60
  6. Step 6: Final answer
    x = 355,842.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.