Home / 420,239.88-579,886.31-236,475.24

Finding the Fourth Proportional to 420,239.88, 579,886.31 and 236,475.24

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Solution

The fourth proportional to 420,239.88, 579,886.31 and 236,475.24 is: 326,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,239.88 : 579,886.31 = 236,475.24 : x
  2. Step 2: Convert to fraction form
    420,239.88/579,886.31 = 236,475.24/x
  3. Step 3: Cross multiply
    420,239.88x = 579,886.31 × 236,475.24
  4. Step 4: Simplify right side
    420,239.88x = 137,128,754,921.15
  5. Step 5: Solve for x
    x = 137,128,754,921.15/420,239.88
  6. Step 6: Final answer
    x = 326,310.67

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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.