Home / 438,004.91-657,003.48-138,485.69

Finding the Fourth Proportional to 438,004.91, 657,003.48 and 138,485.69

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Solution

The fourth proportional to 438,004.91, 657,003.48 and 138,485.69 is: 207,727.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,004.91 : 657,003.48 = 138,485.69 : x
  2. Step 2: Convert to fraction form
    438,004.91/657,003.48 = 138,485.69/x
  3. Step 3: Cross multiply
    438,004.91x = 657,003.48 × 138,485.69
  4. Step 4: Simplify right side
    438,004.91x = 90,985,576,975.18
  5. Step 5: Solve for x
    x = 90,985,576,975.18/438,004.91
  6. Step 6: Final answer
    x = 207,727.30

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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.