Home / 214,272,004.80-321,408,007.20-128,275,665.60

Finding the Fourth Proportional to 214,272,004.80, 321,408,007.20 and 128,275,665.60

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Solution

The fourth proportional to 214,272,004.80, 321,408,007.20 and 128,275,665.60 is: 192,413,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,272,004.80 : 321,408,007.20 = 128,275,665.60 : x
  2. Step 2: Convert to fraction form
    214,272,004.80/321,408,007.20 = 128,275,665.60/x
  3. Step 3: Cross multiply
    214,272,004.80x = 321,408,007.20 × 128,275,665.60
  4. Step 4: Simplify right side
    214,272,004.80x = 41,228,826,052,749,592
  5. Step 5: Solve for x
    x = 41,228,826,052,749,592/214,272,004.80
  6. Step 6: Final answer
    x = 192,413,498.40

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1.5x scale

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.