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Finding the Fourth Proportional to 395,028.86, 545,210.79 and 222,999.26

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Solution

The fourth proportional to 395,028.86, 545,210.79 and 222,999.26 is: 307,779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,028.86 : 545,210.79 = 222,999.26 : x
  2. Step 2: Convert to fraction form
    395,028.86/545,210.79 = 222,999.26/x
  3. Step 3: Cross multiply
    395,028.86x = 545,210.79 × 222,999.26
  4. Step 4: Simplify right side
    395,028.86x = 121,581,602,714.02
  5. Step 5: Solve for x
    x = 121,581,602,714.02/395,028.86
  6. Step 6: Final answer
    x = 307,779.04

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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.