Home / 280,851.15-421,276.73-266,416.95

Finding the Fourth Proportional to 280,851.15, 421,276.73 and 266,416.95

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Solution

The fourth proportional to 280,851.15, 421,276.73 and 266,416.95 is: 399,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,851.15 : 421,276.73 = 266,416.95 : x
  2. Step 2: Convert to fraction form
    280,851.15/421,276.73 = 266,416.95/x
  3. Step 3: Cross multiply
    280,851.15x = 421,276.73 × 266,416.95
  4. Step 4: Simplify right side
    280,851.15x = 112,235,260,180.49
  5. Step 5: Solve for x
    x = 112,235,260,180.49/280,851.15
  6. Step 6: Final answer
    x = 399,625.43

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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.