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Finding the Fourth Proportional to 310,876.40, 465,623.40 and 269,404.40

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Solution

The fourth proportional to 310,876.40, 465,623.40 and 269,404.40 is: 403,507.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,876.40 : 465,623.40 = 269,404.40 : x
  2. Step 2: Convert to fraction form
    310,876.40/465,623.40 = 269,404.40/x
  3. Step 3: Cross multiply
    310,876.40x = 465,623.40 × 269,404.40
  4. Step 4: Simplify right side
    310,876.40x = 125,440,992,702.96
  5. Step 5: Solve for x
    x = 125,440,992,702.96/310,876.40
  6. Step 6: Final answer
    x = 403,507.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.