Home / 420,000.40-629,927.70-153,623.80

Finding the Fourth Proportional to 420,000.40, 629,927.70 and 153,623.80

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Solution

The fourth proportional to 420,000.40, 629,927.70 and 153,623.80 is: 230,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,000.40 : 629,927.70 = 153,623.80 : x
  2. Step 2: Convert to fraction form
    420,000.40/629,927.70 = 153,623.80/x
  3. Step 3: Cross multiply
    420,000.40x = 629,927.70 × 153,623.80
  4. Step 4: Simplify right side
    420,000.40x = 96,771,886,999.26
  5. Step 5: Solve for x
    x = 96,771,886,999.26/420,000.40
  6. Step 6: Final answer
    x = 230,409.04

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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.