Home / 328,725.24-492,897.69-128,811.57

Finding the Fourth Proportional to 328,725.24, 492,897.69 and 128,811.57

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Solution

The fourth proportional to 328,725.24, 492,897.69 and 128,811.57 is: 193,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,725.24 : 492,897.69 = 128,811.57 : x
  2. Step 2: Convert to fraction form
    328,725.24/492,897.69 = 128,811.57/x
  3. Step 3: Cross multiply
    328,725.24x = 492,897.69 × 128,811.57
  4. Step 4: Simplify right side
    328,725.24x = 63,490,925,298.27
  5. Step 5: Solve for x
    x = 63,490,925,298.27/328,725.24
  6. Step 6: Final answer
    x = 193,142.84

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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.