Home / 369,969.20-555,099.60-145,291.40

Finding the Fourth Proportional to 369,969.20, 555,099.60 and 145,291.40

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Solution

The fourth proportional to 369,969.20, 555,099.60 and 145,291.40 is: 217,994.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,969.20 : 555,099.60 = 145,291.40 : x
  2. Step 2: Convert to fraction form
    369,969.20/555,099.60 = 145,291.40/x
  3. Step 3: Cross multiply
    369,969.20x = 555,099.60 × 145,291.40
  4. Step 4: Simplify right side
    369,969.20x = 80,651,198,023.44
  5. Step 5: Solve for x
    x = 80,651,198,023.44/369,969.20
  6. Step 6: Final answer
    x = 217,994.36

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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.