Home / 438,548.28-657,905.36-139,104.24

Finding the Fourth Proportional to 438,548.28, 657,905.36 and 139,104.24

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Solution

The fourth proportional to 438,548.28, 657,905.36 and 139,104.24 is: 208,682.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,548.28 : 657,905.36 = 139,104.24 : x
  2. Step 2: Convert to fraction form
    438,548.28/657,905.36 = 139,104.24/x
  3. Step 3: Cross multiply
    438,548.28x = 657,905.36 × 139,104.24
  4. Step 4: Simplify right side
    438,548.28x = 91,517,424,399.21
  5. Step 5: Solve for x
    x = 91,517,424,399.21/438,548.28
  6. Step 6: Final answer
    x = 208,682.67

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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.