Home / 420,247.32-629,792.78-180,073.72

Finding the Fourth Proportional to 420,247.32, 629,792.78 and 180,073.72

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Solution

The fourth proportional to 420,247.32, 629,792.78 and 180,073.72 is: 269,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,247.32 : 629,792.78 = 180,073.72 : x
  2. Step 2: Convert to fraction form
    420,247.32/629,792.78 = 180,073.72/x
  3. Step 3: Cross multiply
    420,247.32x = 629,792.78 × 180,073.72
  4. Step 4: Simplify right side
    420,247.32x = 113,409,125,574.49
  5. Step 5: Solve for x
    x = 113,409,125,574.49/420,247.32
  6. Step 6: Final answer
    x = 269,862.82

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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.