Home / 421,015,733.71-631,566,914.70-158,921,051.29

Finding the Fourth Proportional to 421,015,733.71, 631,566,914.70 and 158,921,051.29

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Solution

The fourth proportional to 421,015,733.71, 631,566,914.70 and 158,921,051.29 is: 238,397,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,015,733.71 : 631,566,914.70 = 158,921,051.29 : x
  2. Step 2: Convert to fraction form
    421,015,733.71/631,566,914.70 = 158,921,051.29/x
  3. Step 3: Cross multiply
    421,015,733.71x = 631,566,914.70 × 158,921,051.29
  4. Step 4: Simplify right side
    421,015,733.71x = 100,369,278,043,122,784
  5. Step 5: Solve for x
    x = 100,369,278,043,122,784/421,015,733.71
  6. Step 6: Final answer
    x = 238,397,926.75

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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.