Home / 355,727,390.40-490,919,141.28-196,957,512.48

Finding the Fourth Proportional to 355,727,390.40, 490,919,141.28 and 196,957,512.48

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Solution

The fourth proportional to 355,727,390.40, 490,919,141.28 and 196,957,512.48 is: 271,809,862.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,727,390.40 : 490,919,141.28 = 196,957,512.48 : x
  2. Step 2: Convert to fraction form
    355,727,390.40/490,919,141.28 = 196,957,512.48/x
  3. Step 3: Cross multiply
    355,727,390.40x = 490,919,141.28 × 196,957,512.48
  4. Step 4: Simplify right side
    355,727,390.40x = 96,690,212,895,326,480
  5. Step 5: Solve for x
    x = 96,690,212,895,326,480/355,727,390.40
  6. Step 6: Final answer
    x = 271,809,862.00

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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.