Home / 438,091.20-657,309.60-171,806.40

Finding the Fourth Proportional to 438,091.20, 657,309.60 and 171,806.40

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Solution

The fourth proportional to 438,091.20, 657,309.60 and 171,806.40 is: 257,777.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,091.20 : 657,309.60 = 171,806.40 : x
  2. Step 2: Convert to fraction form
    438,091.20/657,309.60 = 171,806.40/x
  3. Step 3: Cross multiply
    438,091.20x = 657,309.60 × 171,806.40
  4. Step 4: Simplify right side
    438,091.20x = 112,929,996,061.44
  5. Step 5: Solve for x
    x = 112,929,996,061.44/438,091.20
  6. Step 6: Final answer
    x = 257,777.37

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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.