Home / 309,755.19-427,612.32-207,743.39

Finding the Fourth Proportional to 309,755.19, 427,612.32 and 207,743.39

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Solution

The fourth proportional to 309,755.19, 427,612.32 and 207,743.39 is: 286,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,755.19 : 427,612.32 = 207,743.39 : x
  2. Step 2: Convert to fraction form
    309,755.19/427,612.32 = 207,743.39/x
  3. Step 3: Cross multiply
    309,755.19x = 427,612.32 × 207,743.39
  4. Step 4: Simplify right side
    309,755.19x = 88,833,630,824.50
  5. Step 5: Solve for x
    x = 88,833,630,824.50/309,755.19
  6. Step 6: Final answer
    x = 286,786.58

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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.