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Finding the Fourth Proportional to 395,041.35, 545,156.42 and 222,995.53

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Solution

The fourth proportional to 395,041.35, 545,156.42 and 222,995.53 is: 307,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,041.35 : 545,156.42 = 222,995.53 : x
  2. Step 2: Convert to fraction form
    395,041.35/545,156.42 = 222,995.53/x
  3. Step 3: Cross multiply
    395,041.35x = 545,156.42 × 222,995.53
  4. Step 4: Simplify right side
    395,041.35x = 121,567,444,810.80
  5. Step 5: Solve for x
    x = 121,567,444,810.80/395,041.35
  6. Step 6: Final answer
    x = 307,733.47

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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.