Home / 309,277.04-426,508.44-201,812.72

Finding the Fourth Proportional to 309,277.04, 426,508.44 and 201,812.72

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Solution

The fourth proportional to 309,277.04, 426,508.44 and 201,812.72 is: 278,309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,277.04 : 426,508.44 = 201,812.72 : x
  2. Step 2: Convert to fraction form
    309,277.04/426,508.44 = 201,812.72/x
  3. Step 3: Cross multiply
    309,277.04x = 426,508.44 × 201,812.72
  4. Step 4: Simplify right side
    309,277.04x = 86,074,828,379.36
  5. Step 5: Solve for x
    x = 86,074,828,379.36/309,277.04
  6. Step 6: Final answer
    x = 278,309.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.