Home / 420,161.40-629,946.86-153,887.32

Finding the Fourth Proportional to 420,161.40, 629,946.86 and 153,887.32

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Solution

The fourth proportional to 420,161.40, 629,946.86 and 153,887.32 is: 230,722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,161.40 : 629,946.86 = 153,887.32 : x
  2. Step 2: Convert to fraction form
    420,161.40/629,946.86 = 153,887.32/x
  3. Step 3: Cross multiply
    420,161.40x = 629,946.86 × 153,887.32
  4. Step 4: Simplify right side
    420,161.40x = 96,940,834,027.82
  5. Step 5: Solve for x
    x = 96,940,834,027.82/420,161.40
  6. Step 6: Final answer
    x = 230,722.85

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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.