Home / 420,588.48-580,361.04-239,323.44

Finding the Fourth Proportional to 420,588.48, 580,361.04 and 239,323.44

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Solution

The fourth proportional to 420,588.48, 580,361.04 and 239,323.44 is: 330,237.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,588.48 : 580,361.04 = 239,323.44 : x
  2. Step 2: Convert to fraction form
    420,588.48/580,361.04 = 239,323.44/x
  3. Step 3: Cross multiply
    420,588.48x = 580,361.04 × 239,323.44
  4. Step 4: Simplify right side
    420,588.48x = 138,894,000,534.78
  5. Step 5: Solve for x
    x = 138,894,000,534.78/420,588.48
  6. Step 6: Final answer
    x = 330,237.29

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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.