Home / 312,945.09-431,888.04-176,981.73

Finding the Fourth Proportional to 312,945.09, 431,888.04 and 176,981.73

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Solution

The fourth proportional to 312,945.09, 431,888.04 and 176,981.73 is: 244,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,945.09 : 431,888.04 = 176,981.73 : x
  2. Step 2: Convert to fraction form
    312,945.09/431,888.04 = 176,981.73/x
  3. Step 3: Cross multiply
    312,945.09x = 431,888.04 × 176,981.73
  4. Step 4: Simplify right side
    312,945.09x = 76,436,292,485.51
  5. Step 5: Solve for x
    x = 76,436,292,485.51/312,945.09
  6. Step 6: Final answer
    x = 244,248.26

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1.5x scale

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.