Home / 202,457.21-279,393.05-111,815.47

Finding the Fourth Proportional to 202,457.21, 279,393.05 and 111,815.47

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Solution

The fourth proportional to 202,457.21, 279,393.05 and 111,815.47 is: 154,306.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,457.21 : 279,393.05 = 111,815.47 : x
  2. Step 2: Convert to fraction form
    202,457.21/279,393.05 = 111,815.47/x
  3. Step 3: Cross multiply
    202,457.21x = 279,393.05 × 111,815.47
  4. Step 4: Simplify right side
    202,457.21x = 31,240,465,829.26
  5. Step 5: Solve for x
    x = 31,240,465,829.26/202,457.21
  6. Step 6: Final answer
    x = 154,306.52

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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.