Home / 280,524.24-421,048.80-138,529.86

Finding the Fourth Proportional to 280,524.24, 421,048.80 and 138,529.86

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Solution

The fourth proportional to 280,524.24, 421,048.80 and 138,529.86 is: 207,924.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,524.24 : 421,048.80 = 138,529.86 : x
  2. Step 2: Convert to fraction form
    280,524.24/421,048.80 = 138,529.86/x
  3. Step 3: Cross multiply
    280,524.24x = 421,048.80 × 138,529.86
  4. Step 4: Simplify right side
    280,524.24x = 58,327,831,317.17
  5. Step 5: Solve for x
    x = 58,327,831,317.17/280,524.24
  6. Step 6: Final answer
    x = 207,924.39

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1.5x scale

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.