Home / 312,888.02-431,786.40-169,648.10

Finding the Fourth Proportional to 312,888.02, 431,786.40 and 169,648.10

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Solution

The fourth proportional to 312,888.02, 431,786.40 and 169,648.10 is: 234,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,888.02 : 431,786.40 = 169,648.10 : x
  2. Step 2: Convert to fraction form
    312,888.02/431,786.40 = 169,648.10/x
  3. Step 3: Cross multiply
    312,888.02x = 431,786.40 × 169,648.10
  4. Step 4: Simplify right side
    312,888.02x = 73,251,742,365.84
  5. Step 5: Solve for x
    x = 73,251,742,365.84/312,888.02
  6. Step 6: Final answer
    x = 234,114.88

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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.