Home / 310,207.58-428,077.12-172,386.04

Finding the Fourth Proportional to 310,207.58, 428,077.12 and 172,386.04

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Solution

The fourth proportional to 310,207.58, 428,077.12 and 172,386.04 is: 237,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,207.58 : 428,077.12 = 172,386.04 : x
  2. Step 2: Convert to fraction form
    310,207.58/428,077.12 = 172,386.04/x
  3. Step 3: Cross multiply
    310,207.58x = 428,077.12 × 172,386.04
  4. Step 4: Simplify right side
    310,207.58x = 73,794,519,531.40
  5. Step 5: Solve for x
    x = 73,794,519,531.40/310,207.58
  6. Step 6: Final answer
    x = 237,887.54

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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.