Home / 389,386.64-584,076.12-123,147.20

Finding the Fourth Proportional to 389,386.64, 584,076.12 and 123,147.20

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Solution

The fourth proportional to 389,386.64, 584,076.12 and 123,147.20 is: 184,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,386.64 : 584,076.12 = 123,147.20 : x
  2. Step 2: Convert to fraction form
    389,386.64/584,076.12 = 123,147.20/x
  3. Step 3: Cross multiply
    389,386.64x = 584,076.12 × 123,147.20
  4. Step 4: Simplify right side
    389,386.64x = 71,927,338,764.86
  5. Step 5: Solve for x
    x = 71,927,338,764.86/389,386.64
  6. Step 6: Final answer
    x = 184,719.59

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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.