Home / 401,319.09-553,742.37-237,945.42

Finding the Fourth Proportional to 401,319.09, 553,742.37 and 237,945.42

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Solution

The fourth proportional to 401,319.09, 553,742.37 and 237,945.42 is: 328,318.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,319.09 : 553,742.37 = 237,945.42 : x
  2. Step 2: Convert to fraction form
    401,319.09/553,742.37 = 237,945.42/x
  3. Step 3: Cross multiply
    401,319.09x = 553,742.37 × 237,945.42
  4. Step 4: Simplify right side
    401,319.09x = 131,760,460,801.45
  5. Step 5: Solve for x
    x = 131,760,460,801.45/401,319.09
  6. Step 6: Final answer
    x = 328,318.45

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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.