Home / 315,945.12-473,918.31-91,323.66

Finding the Fourth Proportional to 315,945.12, 473,918.31 and 91,323.66

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Solution

The fourth proportional to 315,945.12, 473,918.31 and 91,323.66 is: 136,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,945.12 : 473,918.31 = 91,323.66 : x
  2. Step 2: Convert to fraction form
    315,945.12/473,918.31 = 91,323.66/x
  3. Step 3: Cross multiply
    315,945.12x = 473,918.31 × 91,323.66
  4. Step 4: Simplify right side
    315,945.12x = 43,279,954,610.21
  5. Step 5: Solve for x
    x = 43,279,954,610.21/315,945.12
  6. Step 6: Final answer
    x = 136,985.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.