Home / 296,639.63-445,034.80-86,277.57

Finding the Fourth Proportional to 296,639.63, 445,034.80 and 86,277.57

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Solution

The fourth proportional to 296,639.63, 445,034.80 and 86,277.57 is: 129,438.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,639.63 : 445,034.80 = 86,277.57 : x
  2. Step 2: Convert to fraction form
    296,639.63/445,034.80 = 86,277.57/x
  3. Step 3: Cross multiply
    296,639.63x = 445,034.80 × 86,277.57
  4. Step 4: Simplify right side
    296,639.63x = 38,396,521,109.44
  5. Step 5: Solve for x
    x = 38,396,521,109.44/296,639.63
  6. Step 6: Final answer
    x = 129,438.27

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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.