Home / 279,484.77-385,564.36-188,811.57

Finding the Fourth Proportional to 279,484.77, 385,564.36 and 188,811.57

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Solution

The fourth proportional to 279,484.77, 385,564.36 and 188,811.57 is: 260,475.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,484.77 : 385,564.36 = 188,811.57 : x
  2. Step 2: Convert to fraction form
    279,484.77/385,564.36 = 188,811.57/x
  3. Step 3: Cross multiply
    279,484.77x = 385,564.36 × 188,811.57
  4. Step 4: Simplify right side
    279,484.77x = 72,799,012,147.65
  5. Step 5: Solve for x
    x = 72,799,012,147.65/279,484.77
  6. Step 6: Final answer
    x = 260,475.78

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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.