Home / 310,205.56-428,094.05-172,390.29

Finding the Fourth Proportional to 310,205.56, 428,094.05 and 172,390.29

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Solution

The fourth proportional to 310,205.56, 428,094.05 and 172,390.29 is: 237,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,205.56 : 428,094.05 = 172,390.29 : x
  2. Step 2: Convert to fraction form
    310,205.56/428,094.05 = 172,390.29/x
  3. Step 3: Cross multiply
    310,205.56x = 428,094.05 × 172,390.29
  4. Step 4: Simplify right side
    310,205.56x = 73,799,259,987.00
  5. Step 5: Solve for x
    x = 73,799,259,987.00/310,205.56
  6. Step 6: Final answer
    x = 237,904.38

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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.