Home / 290,896,317-436,263,742.38-80,758,728.18

Finding the Fourth Proportional to 290,896,317, 436,263,742.38 and 80,758,728.18

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Solution

The fourth proportional to 290,896,317, 436,263,742.38 and 80,758,728.18 is: 121,115,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,896,317 : 436,263,742.38 = 80,758,728.18 : x
  2. Step 2: Convert to fraction form
    290,896,317/436,263,742.38 = 80,758,728.18/x
  3. Step 3: Cross multiply
    290,896,317x = 436,263,742.38 × 80,758,728.18
  4. Step 4: Simplify right side
    290,896,317x = 35,232,104,985,655,968
  5. Step 5: Solve for x
    x = 35,232,104,985,655,968/290,896,317
  6. Step 6: Final answer
    x = 121,115,679.12

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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.