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Finding the Fourth Proportional to 310,551.15, 465,835.89 and 85,913.44

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Solution

The fourth proportional to 310,551.15, 465,835.89 and 85,913.44 is: 128,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,551.15 : 465,835.89 = 85,913.44 : x
  2. Step 2: Convert to fraction form
    310,551.15/465,835.89 = 85,913.44/x
  3. Step 3: Cross multiply
    310,551.15x = 465,835.89 × 85,913.44
  4. Step 4: Simplify right side
    310,551.15x = 40,021,563,355.79
  5. Step 5: Solve for x
    x = 40,021,563,355.79/310,551.15
  6. Step 6: Final answer
    x = 128,872.70

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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.