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Finding the Fourth Proportional to 310,625.26, 465,948.22 and 85,966.90

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Solution

The fourth proportional to 310,625.26, 465,948.22 and 85,966.90 is: 128,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,625.26 : 465,948.22 = 85,966.90 : x
  2. Step 2: Convert to fraction form
    310,625.26/465,948.22 = 85,966.90/x
  3. Step 3: Cross multiply
    310,625.26x = 465,948.22 × 85,966.90
  4. Step 4: Simplify right side
    310,625.26x = 40,056,124,033.92
  5. Step 5: Solve for x
    x = 40,056,124,033.92/310,625.26
  6. Step 6: Final answer
    x = 128,953.21

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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.