Home / 219,830.88-303,378.36-139,228.80

Finding the Fourth Proportional to 219,830.88, 303,378.36 and 139,228.80

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Solution

The fourth proportional to 219,830.88, 303,378.36 and 139,228.80 is: 192,143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,830.88 : 303,378.36 = 139,228.80 : x
  2. Step 2: Convert to fraction form
    219,830.88/303,378.36 = 139,228.80/x
  3. Step 3: Cross multiply
    219,830.88x = 303,378.36 × 139,228.80
  4. Step 4: Simplify right side
    219,830.88x = 42,239,005,008.77
  5. Step 5: Solve for x
    x = 42,239,005,008.77/219,830.88
  6. Step 6: Final answer
    x = 192,143.18

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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.