Home / 280,840.04-387,443.22-196,006.76

Finding the Fourth Proportional to 280,840.04, 387,443.22 and 196,006.76

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Solution

The fourth proportional to 280,840.04, 387,443.22 and 196,006.76 is: 270,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,840.04 : 387,443.22 = 196,006.76 : x
  2. Step 2: Convert to fraction form
    280,840.04/387,443.22 = 196,006.76/x
  3. Step 3: Cross multiply
    280,840.04x = 387,443.22 × 196,006.76
  4. Step 4: Simplify right side
    280,840.04x = 75,941,490,236.17
  5. Step 5: Solve for x
    x = 75,941,490,236.17/280,840.04
  6. Step 6: Final answer
    x = 270,408.34

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1.5x scale

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.