Home / 339,433.96-509,150.93-86,715

Finding the Fourth Proportional to 339,433.96, 509,150.93 and 86,715

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Solution

The fourth proportional to 339,433.96, 509,150.93 and 86,715 is: 130,072.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,433.96 : 509,150.93 = 86,715 : x
  2. Step 2: Convert to fraction form
    339,433.96/509,150.93 = 86,715/x
  3. Step 3: Cross multiply
    339,433.96x = 509,150.93 × 86,715
  4. Step 4: Simplify right side
    339,433.96x = 44,151,022,894.95
  5. Step 5: Solve for x
    x = 44,151,022,894.95/339,433.96
  6. Step 6: Final answer
    x = 130,072.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.