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Finding the Fourth Proportional to 367,427.60, 550,363.80 and 288,112.40

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Solution

The fourth proportional to 367,427.60, 550,363.80 and 288,112.40 is: 431,558.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,427.60 : 550,363.80 = 288,112.40 : x
  2. Step 2: Convert to fraction form
    367,427.60/550,363.80 = 288,112.40/x
  3. Step 3: Cross multiply
    367,427.60x = 550,363.80 × 288,112.40
  4. Step 4: Simplify right side
    367,427.60x = 158,566,635,291.12
  5. Step 5: Solve for x
    x = 158,566,635,291.12/367,427.60
  6. Step 6: Final answer
    x = 431,558.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.