Home / 305,108,759.17-421,139,695.60-199,278,353.40

Finding the Fourth Proportional to 305,108,759.17, 421,139,695.60 and 199,278,353.40

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Solution

The fourth proportional to 305,108,759.17, 421,139,695.60 and 199,278,353.40 is: 275,062,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,108,759.17 : 421,139,695.60 = 199,278,353.40 : x
  2. Step 2: Convert to fraction form
    305,108,759.17/421,139,695.60 = 199,278,353.40/x
  3. Step 3: Cross multiply
    305,108,759.17x = 421,139,695.60 × 199,278,353.40
  4. Step 4: Simplify right side
    305,108,759.17x = 83,924,025,090,545,232
  5. Step 5: Solve for x
    x = 83,924,025,090,545,232/305,108,759.17
  6. Step 6: Final answer
    x = 275,062,654.11

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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.