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Finding the Fourth Proportional to 438,183.94, 657,210.12 and 138,625.59

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Solution

The fourth proportional to 438,183.94, 657,210.12 and 138,625.59 is: 207,917.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,183.94 : 657,210.12 = 138,625.59 : x
  2. Step 2: Convert to fraction form
    438,183.94/657,210.12 = 138,625.59/x
  3. Step 3: Cross multiply
    438,183.94x = 657,210.12 × 138,625.59
  4. Step 4: Simplify right side
    438,183.94x = 91,106,140,638.97
  5. Step 5: Solve for x
    x = 91,106,140,638.97/438,183.94
  6. Step 6: Final answer
    x = 207,917.57

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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.