Home / 310,625.43-465,938.82-85,986.51

Finding the Fourth Proportional to 310,625.43, 465,938.82 and 85,986.51

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Solution

The fourth proportional to 310,625.43, 465,938.82 and 85,986.51 is: 128,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,625.43 : 465,938.82 = 85,986.51 : x
  2. Step 2: Convert to fraction form
    310,625.43/465,938.82 = 85,986.51/x
  3. Step 3: Cross multiply
    310,625.43x = 465,938.82 × 85,986.51
  4. Step 4: Simplify right side
    310,625.43x = 40,064,453,005.32
  5. Step 5: Solve for x
    x = 40,064,453,005.32/310,625.43
  6. Step 6: Final answer
    x = 128,979.95

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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.