Home / 400,422.35-552,582.78-219,134.40

Finding the Fourth Proportional to 400,422.35, 552,582.78 and 219,134.40

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Solution

The fourth proportional to 400,422.35, 552,582.78 and 219,134.40 is: 302,405.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,422.35 : 552,582.78 = 219,134.40 : x
  2. Step 2: Convert to fraction form
    400,422.35/552,582.78 = 219,134.40/x
  3. Step 3: Cross multiply
    400,422.35x = 552,582.78 × 219,134.40
  4. Step 4: Simplify right side
    400,422.35x = 121,089,893,051.69
  5. Step 5: Solve for x
    x = 121,089,893,051.69/400,422.35
  6. Step 6: Final answer
    x = 302,405.43

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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.