Home / 229,448.16-316,636.56-128,844

Finding the Fourth Proportional to 229,448.16, 316,636.56 and 128,844

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Solution

The fourth proportional to 229,448.16, 316,636.56 and 128,844 is: 177,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,448.16 : 316,636.56 = 128,844 : x
  2. Step 2: Convert to fraction form
    229,448.16/316,636.56 = 128,844/x
  3. Step 3: Cross multiply
    229,448.16x = 316,636.56 × 128,844
  4. Step 4: Simplify right side
    229,448.16x = 40,796,720,936.64
  5. Step 5: Solve for x
    x = 40,796,720,936.64/229,448.16
  6. Step 6: Final answer
    x = 177,803.65

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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.