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Finding the Fourth Proportional to 421,141.25, 581,177.25 and 237,382.68

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Solution

The fourth proportional to 421,141.25, 581,177.25 and 237,382.68 is: 327,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,141.25 : 581,177.25 = 237,382.68 : x
  2. Step 2: Convert to fraction form
    421,141.25/581,177.25 = 237,382.68/x
  3. Step 3: Cross multiply
    421,141.25x = 581,177.25 × 237,382.68
  4. Step 4: Simplify right side
    421,141.25x = 137,961,411,103.40
  5. Step 5: Solve for x
    x = 137,961,411,103.40/421,141.25
  6. Step 6: Final answer
    x = 327,589.40

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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.