Home / 353,040.30-487,307.07-225,716.40

Finding the Fourth Proportional to 353,040.30, 487,307.07 and 225,716.40

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Solution

The fourth proportional to 353,040.30, 487,307.07 and 225,716.40 is: 311,559.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,040.30 : 487,307.07 = 225,716.40 : x
  2. Step 2: Convert to fraction form
    353,040.30/487,307.07 = 225,716.40/x
  3. Step 3: Cross multiply
    353,040.30x = 487,307.07 × 225,716.40
  4. Step 4: Simplify right side
    353,040.30x = 109,993,197,534.95
  5. Step 5: Solve for x
    x = 109,993,197,534.95/353,040.30
  6. Step 6: Final answer
    x = 311,559.89

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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.