Home / 338,723.45-508,085.40-86,022.89

Finding the Fourth Proportional to 338,723.45, 508,085.40 and 86,022.89

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Solution

The fourth proportional to 338,723.45, 508,085.40 and 86,022.89 is: 129,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,723.45 : 508,085.40 = 86,022.89 : x
  2. Step 2: Convert to fraction form
    338,723.45/508,085.40 = 86,022.89/x
  3. Step 3: Cross multiply
    338,723.45x = 508,085.40 × 86,022.89
  4. Step 4: Simplify right side
    338,723.45x = 43,706,974,474.81
  5. Step 5: Solve for x
    x = 43,706,974,474.81/338,723.45
  6. Step 6: Final answer
    x = 129,034.39

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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.