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Finding the Fourth Proportional to 310,377.33, 465,492.20 and 85,732.81

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Solution

The fourth proportional to 310,377.33, 465,492.20 and 85,732.81 is: 128,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,377.33 : 465,492.20 = 85,732.81 : x
  2. Step 2: Convert to fraction form
    310,377.33/465,492.20 = 85,732.81/x
  3. Step 3: Cross multiply
    310,377.33x = 465,492.20 × 85,732.81
  4. Step 4: Simplify right side
    310,377.33x = 39,907,952,746.69
  5. Step 5: Solve for x
    x = 39,907,952,746.69/310,377.33
  6. Step 6: Final answer
    x = 128,578.83

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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.