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Finding the Fourth Proportional to 438,352.54, 657,566.30 and 154,018.38

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Solution

The fourth proportional to 438,352.54, 657,566.30 and 154,018.38 is: 231,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,352.54 : 657,566.30 = 154,018.38 : x
  2. Step 2: Convert to fraction form
    438,352.54/657,566.30 = 154,018.38/x
  3. Step 3: Cross multiply
    438,352.54x = 657,566.30 × 154,018.38
  4. Step 4: Simplify right side
    438,352.54x = 101,277,296,268.59
  5. Step 5: Solve for x
    x = 101,277,296,268.59/438,352.54
  6. Step 6: Final answer
    x = 231,040.74

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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.