Home / 234,278,643.27-323,303,970.42-128,431,872.21

Finding the Fourth Proportional to 234,278,643.27, 323,303,970.42 and 128,431,872.21

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Solution

The fourth proportional to 234,278,643.27, 323,303,970.42 and 128,431,872.21 is: 177,235,678.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,278,643.27 : 323,303,970.42 = 128,431,872.21 : x
  2. Step 2: Convert to fraction form
    234,278,643.27/323,303,970.42 = 128,431,872.21/x
  3. Step 3: Cross multiply
    234,278,643.27x = 323,303,970.42 × 128,431,872.21
  4. Step 4: Simplify right side
    234,278,643.27x = 41,522,534,213,967,064
  5. Step 5: Solve for x
    x = 41,522,534,213,967,064/234,278,643.27
  6. Step 6: Final answer
    x = 177,235,678.14

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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.