Home / 226,403,642.34-312,438,084.49-128,623,863.78

Finding the Fourth Proportional to 226,403,642.34, 312,438,084.49 and 128,623,863.78

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Solution

The fourth proportional to 226,403,642.34, 312,438,084.49 and 128,623,863.78 is: 177,501,533.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,403,642.34 : 312,438,084.49 = 128,623,863.78 : x
  2. Step 2: Convert to fraction form
    226,403,642.34/312,438,084.49 = 128,623,863.78/x
  3. Step 3: Cross multiply
    226,403,642.34x = 312,438,084.49 × 128,623,863.78
  4. Step 4: Simplify right side
    226,403,642.34x = 40,186,993,619,125,896
  5. Step 5: Solve for x
    x = 40,186,993,619,125,896/226,403,642.34
  6. Step 6: Final answer
    x = 177,501,533.12

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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.