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Finding the Fourth Proportional to 231,401.40, 319,328.94 and 125,417.40

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Solution

The fourth proportional to 231,401.40, 319,328.94 and 125,417.40 is: 173,073.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,401.40 : 319,328.94 = 125,417.40 : x
  2. Step 2: Convert to fraction form
    231,401.40/319,328.94 = 125,417.40/x
  3. Step 3: Cross multiply
    231,401.40x = 319,328.94 × 125,417.40
  4. Step 4: Simplify right side
    231,401.40x = 40,049,405,399.56
  5. Step 5: Solve for x
    x = 40,049,405,399.56/231,401.40
  6. Step 6: Final answer
    x = 173,073.31

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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.