Home / 310,291,939.60-465,400,584.60-128,520,163.60

Finding the Fourth Proportional to 310,291,939.60, 465,400,584.60 and 128,520,163.60

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Solution

The fourth proportional to 310,291,939.60, 465,400,584.60 and 128,520,163.60 is: 192,764,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,291,939.60 : 465,400,584.60 = 128,520,163.60 : x
  2. Step 2: Convert to fraction form
    310,291,939.60/465,400,584.60 = 128,520,163.60/x
  3. Step 3: Cross multiply
    310,291,939.60x = 465,400,584.60 × 128,520,163.60
  4. Step 4: Simplify right side
    310,291,939.60x = 59,813,359,272,327,640
  5. Step 5: Solve for x
    x = 59,813,359,272,327,640/310,291,939.60
  6. Step 6: Final answer
    x = 192,764,785.80

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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.