Home / 448,221.60-671,410.80-308,138.40

Finding the Fourth Proportional to 448,221.60, 671,410.80 and 308,138.40

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Solution

The fourth proportional to 448,221.60, 671,410.80 and 308,138.40 is: 461,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,221.60 : 671,410.80 = 308,138.40 : x
  2. Step 2: Convert to fraction form
    448,221.60/671,410.80 = 308,138.40/x
  3. Step 3: Cross multiply
    448,221.60x = 671,410.80 × 308,138.40
  4. Step 4: Simplify right side
    448,221.60x = 206,887,449,654.72
  5. Step 5: Solve for x
    x = 206,887,449,654.72/448,221.60
  6. Step 6: Final answer
    x = 461,574.03

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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.