Home / 371,928.30-513,392.69-221,023.50

Finding the Fourth Proportional to 371,928.30, 513,392.69 and 221,023.50

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Solution

The fourth proportional to 371,928.30, 513,392.69 and 221,023.50 is: 305,090.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,928.30 : 513,392.69 = 221,023.50 : x
  2. Step 2: Convert to fraction form
    371,928.30/513,392.69 = 221,023.50/x
  3. Step 3: Cross multiply
    371,928.30x = 513,392.69 × 221,023.50
  4. Step 4: Simplify right side
    371,928.30x = 113,471,849,218.22
  5. Step 5: Solve for x
    x = 113,471,849,218.22/371,928.30
  6. Step 6: Final answer
    x = 305,090.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.