Home / 309,721.20-427,406.67-182,405.40

Finding the Fourth Proportional to 309,721.20, 427,406.67 and 182,405.40

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Solution

The fourth proportional to 309,721.20, 427,406.67 and 182,405.40 is: 251,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,721.20 : 427,406.67 = 182,405.40 : x
  2. Step 2: Convert to fraction form
    309,721.20/427,406.67 = 182,405.40/x
  3. Step 3: Cross multiply
    309,721.20x = 427,406.67 × 182,405.40
  4. Step 4: Simplify right side
    309,721.20x = 77,961,284,604.02
  5. Step 5: Solve for x
    x = 77,961,284,604.02/309,721.20
  6. Step 6: Final answer
    x = 251,714.40

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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.