Home / 328,723.24-492,894.69-128,809.57

Finding the Fourth Proportional to 328,723.24, 492,894.69 and 128,809.57

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Solution

The fourth proportional to 328,723.24, 492,894.69 and 128,809.57 is: 193,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,723.24 : 492,894.69 = 128,809.57 : x
  2. Step 2: Convert to fraction form
    328,723.24/492,894.69 = 128,809.57/x
  3. Step 3: Cross multiply
    328,723.24x = 492,894.69 × 128,809.57
  4. Step 4: Simplify right side
    328,723.24x = 63,489,553,074.18
  5. Step 5: Solve for x
    x = 63,489,553,074.18/328,723.24
  6. Step 6: Final answer
    x = 193,139.84

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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.