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Finding the Fourth Proportional to 351,716.40, 527,575.32 and 85,477.32

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Solution

The fourth proportional to 351,716.40, 527,575.32 and 85,477.32 is: 128,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,716.40 : 527,575.32 = 85,477.32 : x
  2. Step 2: Convert to fraction form
    351,716.40/527,575.32 = 85,477.32/x
  3. Step 3: Cross multiply
    351,716.40x = 527,575.32 × 85,477.32
  4. Step 4: Simplify right side
    351,716.40x = 45,095,724,451.74
  5. Step 5: Solve for x
    x = 45,095,724,451.74/351,716.40
  6. Step 6: Final answer
    x = 128,216.15

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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.