Home / 320,918.56-442,767.72-213,506.79

Finding the Fourth Proportional to 320,918.56, 442,767.72 and 213,506.79

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Solution

The fourth proportional to 320,918.56, 442,767.72 and 213,506.79 is: 294,572.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,918.56 : 442,767.72 = 213,506.79 : x
  2. Step 2: Convert to fraction form
    320,918.56/442,767.72 = 213,506.79/x
  3. Step 3: Cross multiply
    320,918.56x = 442,767.72 × 213,506.79
  4. Step 4: Simplify right side
    320,918.56x = 94,533,912,552.11
  5. Step 5: Solve for x
    x = 94,533,912,552.11/320,918.56
  6. Step 6: Final answer
    x = 294,572.91

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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.