Home / 391,498,407.66-540,270,613.10-212,881,016.06

Finding the Fourth Proportional to 391,498,407.66, 540,270,613.10 and 212,881,016.06

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Solution

The fourth proportional to 391,498,407.66, 540,270,613.10 and 212,881,016.06 is: 293,777,330.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,498,407.66 : 540,270,613.10 = 212,881,016.06 : x
  2. Step 2: Convert to fraction form
    391,498,407.66/540,270,613.10 = 212,881,016.06/x
  3. Step 3: Cross multiply
    391,498,407.66x = 540,270,613.10 × 212,881,016.06
  4. Step 4: Simplify right side
    391,498,407.66x = 115,013,357,060,321,392
  5. Step 5: Solve for x
    x = 115,013,357,060,321,392/391,498,407.66
  6. Step 6: Final answer
    x = 293,777,330.41

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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.