Home / 229,428.06-316,614.87-128,829.66

Finding the Fourth Proportional to 229,428.06, 316,614.87 and 128,829.66

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Solution

The fourth proportional to 229,428.06, 316,614.87 and 128,829.66 is: 177,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,428.06 : 316,614.87 = 128,829.66 : x
  2. Step 2: Convert to fraction form
    229,428.06/316,614.87 = 128,829.66/x
  3. Step 3: Cross multiply
    229,428.06x = 316,614.87 × 128,829.66
  4. Step 4: Simplify right side
    229,428.06x = 40,789,386,053.04
  5. Step 5: Solve for x
    x = 40,789,386,053.04/229,428.06
  6. Step 6: Final answer
    x = 177,787.26

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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.