Home / 280,846.29-421,336.23-91,307.49

Finding the Fourth Proportional to 280,846.29, 421,336.23 and 91,307.49

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Solution

The fourth proportional to 280,846.29, 421,336.23 and 91,307.49 is: 136,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,846.29 : 421,336.23 = 91,307.49 : x
  2. Step 2: Convert to fraction form
    280,846.29/421,336.23 = 91,307.49/x
  3. Step 3: Cross multiply
    280,846.29x = 421,336.23 × 91,307.49
  4. Step 4: Simplify right side
    280,846.29x = 38,471,153,607.36
  5. Step 5: Solve for x
    x = 38,471,153,607.36/280,846.29
  6. Step 6: Final answer
    x = 136,982.95

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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.