Home / 312,500.40-431,277.06-176,559.30

Finding the Fourth Proportional to 312,500.40, 431,277.06 and 176,559.30

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Solution

The fourth proportional to 312,500.40, 431,277.06 and 176,559.30 is: 243,666.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,500.40 : 431,277.06 = 176,559.30 : x
  2. Step 2: Convert to fraction form
    312,500.40/431,277.06 = 176,559.30/x
  3. Step 3: Cross multiply
    312,500.40x = 431,277.06 × 176,559.30
  4. Step 4: Simplify right side
    312,500.40x = 76,145,975,819.66
  5. Step 5: Solve for x
    x = 76,145,975,819.66/312,500.40
  6. Step 6: Final answer
    x = 243,666.81

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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.