Home / 313,979.98-470,934.94-86,293.05

Finding the Fourth Proportional to 313,979.98, 470,934.94 and 86,293.05

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Solution

The fourth proportional to 313,979.98, 470,934.94 and 86,293.05 is: 129,429.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,979.98 : 470,934.94 = 86,293.05 : x
  2. Step 2: Convert to fraction form
    313,979.98/470,934.94 = 86,293.05/x
  3. Step 3: Cross multiply
    313,979.98x = 470,934.94 × 86,293.05
  4. Step 4: Simplify right side
    313,979.98x = 40,638,409,538.03
  5. Step 5: Solve for x
    x = 40,638,409,538.03/313,979.98
  6. Step 6: Final answer
    x = 129,429.94

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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.