Home / 306,215,811.60-459,323,717.40-279,431,185.20

Finding the Fourth Proportional to 306,215,811.60, 459,323,717.40 and 279,431,185.20

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Solution

The fourth proportional to 306,215,811.60, 459,323,717.40 and 279,431,185.20 is: 419,146,777.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,215,811.60 : 459,323,717.40 = 279,431,185.20 : x
  2. Step 2: Convert to fraction form
    306,215,811.60/459,323,717.40 = 279,431,185.20/x
  3. Step 3: Cross multiply
    306,215,811.60x = 459,323,717.40 × 279,431,185.20
  4. Step 4: Simplify right side
    306,215,811.60x = 128,349,370,743,551,856
  5. Step 5: Solve for x
    x = 128,349,370,743,551,856/306,215,811.60
  6. Step 6: Final answer
    x = 419,146,777.80

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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.