Home / 212,859,257.60-319,288,886.40-161,840,921.60

Finding the Fourth Proportional to 212,859,257.60, 319,288,886.40 and 161,840,921.60

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Solution

The fourth proportional to 212,859,257.60, 319,288,886.40 and 161,840,921.60 is: 242,761,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,859,257.60 : 319,288,886.40 = 161,840,921.60 : x
  2. Step 2: Convert to fraction form
    212,859,257.60/319,288,886.40 = 161,840,921.60/x
  3. Step 3: Cross multiply
    212,859,257.60x = 319,288,886.40 × 161,840,921.60
  4. Step 4: Simplify right side
    212,859,257.60x = 51,674,007,631,613,704
  5. Step 5: Solve for x
    x = 51,674,007,631,613,704/212,859,257.60
  6. Step 6: Final answer
    x = 242,761,382.40

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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.