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Finding the Fourth Proportional to 310,363.37, 465,535.84 and 85,737.32

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Solution

The fourth proportional to 310,363.37, 465,535.84 and 85,737.32 is: 128,603.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,363.37 : 465,535.84 = 85,737.32 : x
  2. Step 2: Convert to fraction form
    310,363.37/465,535.84 = 85,737.32/x
  3. Step 3: Cross multiply
    310,363.37x = 465,535.84 × 85,737.32
  4. Step 4: Simplify right side
    310,363.37x = 39,913,795,285.55
  5. Step 5: Solve for x
    x = 39,913,795,285.55/310,363.37
  6. Step 6: Final answer
    x = 128,603.43

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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.