Home / 438,923.60-657,991.20-172,865.60

Finding the Fourth Proportional to 438,923.60, 657,991.20 and 172,865.60

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Solution

The fourth proportional to 438,923.60, 657,991.20 and 172,865.60 is: 259,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,923.60 : 657,991.20 = 172,865.60 : x
  2. Step 2: Convert to fraction form
    438,923.60/657,991.20 = 172,865.60/x
  3. Step 3: Cross multiply
    438,923.60x = 657,991.20 × 172,865.60
  4. Step 4: Simplify right side
    438,923.60x = 113,744,043,582.72
  5. Step 5: Solve for x
    x = 113,744,043,582.72/438,923.60
  6. Step 6: Final answer
    x = 259,143.15

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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.