Home / 438,101.20-657,324.60-171,816.40

Finding the Fourth Proportional to 438,101.20, 657,324.60 and 171,816.40

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Solution

The fourth proportional to 438,101.20, 657,324.60 and 171,816.40 is: 257,792.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,101.20 : 657,324.60 = 171,816.40 : x
  2. Step 2: Convert to fraction form
    438,101.20/657,324.60 = 171,816.40/x
  3. Step 3: Cross multiply
    438,101.20x = 657,324.60 × 171,816.40
  4. Step 4: Simplify right side
    438,101.20x = 112,939,146,403.44
  5. Step 5: Solve for x
    x = 112,939,146,403.44/438,101.20
  6. Step 6: Final answer
    x = 257,792.37

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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.