Home / 328,021.20-492,031.80-117,631.80

Finding the Fourth Proportional to 328,021.20, 492,031.80 and 117,631.80

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Solution

The fourth proportional to 328,021.20, 492,031.80 and 117,631.80 is: 176,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,021.20 : 492,031.80 = 117,631.80 : x
  2. Step 2: Convert to fraction form
    328,021.20/492,031.80 = 117,631.80/x
  3. Step 3: Cross multiply
    328,021.20x = 492,031.80 × 117,631.80
  4. Step 4: Simplify right side
    328,021.20x = 57,878,586,291.24
  5. Step 5: Solve for x
    x = 57,878,586,291.24/328,021.20
  6. Step 6: Final answer
    x = 176,447.70

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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.