Home / 309,818.21-427,514.40-173,823.89

Finding the Fourth Proportional to 309,818.21, 427,514.40 and 173,823.89

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Solution

The fourth proportional to 309,818.21, 427,514.40 and 173,823.89 is: 239,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,818.21 : 427,514.40 = 173,823.89 : x
  2. Step 2: Convert to fraction form
    309,818.21/427,514.40 = 173,823.89/x
  3. Step 3: Cross multiply
    309,818.21x = 427,514.40 × 173,823.89
  4. Step 4: Simplify right side
    309,818.21x = 74,312,213,901.44
  5. Step 5: Solve for x
    x = 74,312,213,901.44/309,818.21
  6. Step 6: Final answer
    x = 239,857.48

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1.5x scale

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.