Home / 438,097.20-657,318.60-171,812.40

Finding the Fourth Proportional to 438,097.20, 657,318.60 and 171,812.40

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Solution

The fourth proportional to 438,097.20, 657,318.60 and 171,812.40 is: 257,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,097.20 : 657,318.60 = 171,812.40 : x
  2. Step 2: Convert to fraction form
    438,097.20/657,318.60 = 171,812.40/x
  3. Step 3: Cross multiply
    438,097.20x = 657,318.60 × 171,812.40
  4. Step 4: Simplify right side
    438,097.20x = 112,935,486,230.64
  5. Step 5: Solve for x
    x = 112,935,486,230.64/438,097.20
  6. Step 6: Final answer
    x = 257,786.37

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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.