Home / 213,637.40-320,428.26-55,878.02

Finding the Fourth Proportional to 213,637.40, 320,428.26 and 55,878.02

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Solution

The fourth proportional to 213,637.40, 320,428.26 and 55,878.02 is: 83,809.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,637.40 : 320,428.26 = 55,878.02 : x
  2. Step 2: Convert to fraction form
    213,637.40/320,428.26 = 55,878.02/x
  3. Step 3: Cross multiply
    213,637.40x = 320,428.26 × 55,878.02
  4. Step 4: Simplify right side
    213,637.40x = 17,904,896,720.85
  5. Step 5: Solve for x
    x = 17,904,896,720.85/213,637.40
  6. Step 6: Final answer
    x = 83,809.75

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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.