Home / 385,690.28-532,246.75-215,930.48

Finding the Fourth Proportional to 385,690.28, 532,246.75 and 215,930.48

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Solution

The fourth proportional to 385,690.28, 532,246.75 and 215,930.48 is: 297,980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,690.28 : 532,246.75 = 215,930.48 : x
  2. Step 2: Convert to fraction form
    385,690.28/532,246.75 = 215,930.48/x
  3. Step 3: Cross multiply
    385,690.28x = 532,246.75 × 215,930.48
  4. Step 4: Simplify right side
    385,690.28x = 114,928,293,004.88
  5. Step 5: Solve for x
    x = 114,928,293,004.88/385,690.28
  6. Step 6: Final answer
    x = 297,980.79

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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.