Home / 310,236,042.72-428,125,634.52-171,009,129.56

Finding the Fourth Proportional to 310,236,042.72, 428,125,634.52 and 171,009,129.56

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Solution

The fourth proportional to 310,236,042.72, 428,125,634.52 and 171,009,129.56 is: 235,992,541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,236,042.72 : 428,125,634.52 = 171,009,129.56 : x
  2. Step 2: Convert to fraction form
    310,236,042.72/428,125,634.52 = 171,009,129.56/x
  3. Step 3: Cross multiply
    310,236,042.72x = 428,125,634.52 × 171,009,129.56
  4. Step 4: Simplify right side
    310,236,042.72x = 73,213,392,101,587,888
  5. Step 5: Solve for x
    x = 73,213,392,101,587,888/310,236,042.72
  6. Step 6: Final answer
    x = 235,992,541.23

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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.