Home / 386,646.90-579,941.55-161,949.30

Finding the Fourth Proportional to 386,646.90, 579,941.55 and 161,949.30

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Solution

The fourth proportional to 386,646.90, 579,941.55 and 161,949.30 is: 242,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,646.90 : 579,941.55 = 161,949.30 : x
  2. Step 2: Convert to fraction form
    386,646.90/579,941.55 = 161,949.30/x
  3. Step 3: Cross multiply
    386,646.90x = 579,941.55 × 161,949.30
  4. Step 4: Simplify right side
    386,646.90x = 93,921,128,063.42
  5. Step 5: Solve for x
    x = 93,921,128,063.42/386,646.90
  6. Step 6: Final answer
    x = 242,911.89

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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.