Home / 312,911.09-469,088.29-113,187.03

Finding the Fourth Proportional to 312,911.09, 469,088.29 and 113,187.03

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Solution

The fourth proportional to 312,911.09, 469,088.29 and 113,187.03 is: 169,679.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,911.09 : 469,088.29 = 113,187.03 : x
  2. Step 2: Convert to fraction form
    312,911.09/469,088.29 = 113,187.03/x
  3. Step 3: Cross multiply
    312,911.09x = 469,088.29 × 113,187.03
  4. Step 4: Simplify right side
    312,911.09x = 53,094,710,352.88
  5. Step 5: Solve for x
    x = 53,094,710,352.88/312,911.09
  6. Step 6: Final answer
    x = 169,679.86

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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.