Home / 318,051.77-438,912.07-172,858.35

Finding the Fourth Proportional to 318,051.77, 438,912.07 and 172,858.35

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Solution

The fourth proportional to 318,051.77, 438,912.07 and 172,858.35 is: 238,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,051.77 : 438,912.07 = 172,858.35 : x
  2. Step 2: Convert to fraction form
    318,051.77/438,912.07 = 172,858.35/x
  3. Step 3: Cross multiply
    318,051.77x = 438,912.07 × 172,858.35
  4. Step 4: Simplify right side
    318,051.77x = 75,869,617,429.06
  5. Step 5: Solve for x
    x = 75,869,617,429.06/318,051.77
  6. Step 6: Final answer
    x = 238,544.87

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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.