Home / 438,023.16-657,035.82-122,479.56

Finding the Fourth Proportional to 438,023.16, 657,035.82 and 122,479.56

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Solution

The fourth proportional to 438,023.16, 657,035.82 and 122,479.56 is: 183,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,023.16 : 657,035.82 = 122,479.56 : x
  2. Step 2: Convert to fraction form
    438,023.16/657,035.82 = 122,479.56/x
  3. Step 3: Cross multiply
    438,023.16x = 657,035.82 × 122,479.56
  4. Step 4: Simplify right side
    438,023.16x = 80,473,458,137.84
  5. Step 5: Solve for x
    x = 80,473,458,137.84/438,023.16
  6. Step 6: Final answer
    x = 183,719.64

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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.