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Finding the Fourth Proportional to 401,321.09, 553,745.13 and 237,947.42

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Solution

The fourth proportional to 401,321.09, 553,745.13 and 237,947.42 is: 328,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,321.09 : 553,745.13 = 237,947.42 : x
  2. Step 2: Convert to fraction form
    401,321.09/553,745.13 = 237,947.42/x
  3. Step 3: Cross multiply
    401,321.09x = 553,745.13 × 237,947.42
  4. Step 4: Simplify right side
    401,321.09x = 131,762,225,021.07
  5. Step 5: Solve for x
    x = 131,762,225,021.07/401,321.09
  6. Step 6: Final answer
    x = 328,321.21

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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.