Home / 280,709.47-421,066.03-112,243.95

Finding the Fourth Proportional to 280,709.47, 421,066.03 and 112,243.95

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Solution

The fourth proportional to 280,709.47, 421,066.03 and 112,243.95 is: 168,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,709.47 : 421,066.03 = 112,243.95 : x
  2. Step 2: Convert to fraction form
    280,709.47/421,066.03 = 112,243.95/x
  3. Step 3: Cross multiply
    280,709.47x = 421,066.03 × 112,243.95
  4. Step 4: Simplify right side
    280,709.47x = 47,262,114,418.02
  5. Step 5: Solve for x
    x = 47,262,114,418.02/280,709.47
  6. Step 6: Final answer
    x = 168,366.65

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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.