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Finding the Fourth Proportional to 485,850.81, 670,458.29 and 265,079.91

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Solution

The fourth proportional to 485,850.81, 670,458.29 and 265,079.91 is: 365,801.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,850.81 : 670,458.29 = 265,079.91 : x
  2. Step 2: Convert to fraction form
    485,850.81/670,458.29 = 265,079.91/x
  3. Step 3: Cross multiply
    485,850.81x = 670,458.29 × 265,079.91
  4. Step 4: Simplify right side
    485,850.81x = 177,725,021,846.55
  5. Step 5: Solve for x
    x = 177,725,021,846.55/485,850.81
  6. Step 6: Final answer
    x = 365,801.64

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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.