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Finding the Fourth Proportional to 339,373.32, 509,059.44 and 86,653.68

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Solution

The fourth proportional to 339,373.32, 509,059.44 and 86,653.68 is: 129,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,373.32 : 509,059.44 = 86,653.68 : x
  2. Step 2: Convert to fraction form
    339,373.32/509,059.44 = 86,653.68/x
  3. Step 3: Cross multiply
    339,373.32x = 509,059.44 × 86,653.68
  4. Step 4: Simplify right side
    339,373.32x = 44,111,873,814.74
  5. Step 5: Solve for x
    x = 44,111,873,814.74/339,373.32
  6. Step 6: Final answer
    x = 129,980.38

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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.