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Finding the Fourth Proportional to 395,555, 545,868.54 and 214,266.94

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Solution

The fourth proportional to 395,555, 545,868.54 and 214,266.94 is: 295,689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,555 : 545,868.54 = 214,266.94 : x
  2. Step 2: Convert to fraction form
    395,555/545,868.54 = 214,266.94/x
  3. Step 3: Cross multiply
    395,555x = 545,868.54 × 214,266.94
  4. Step 4: Simplify right side
    395,555x = 116,961,581,708.07
  5. Step 5: Solve for x
    x = 116,961,581,708.07/395,555
  6. Step 6: Final answer
    x = 295,689.81

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1.5x scale

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.