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Finding the Fourth Proportional to 351,596.84, 527,398.56 and 85,359.69

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Solution

The fourth proportional to 351,596.84, 527,398.56 and 85,359.69 is: 128,040.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,596.84 : 527,398.56 = 85,359.69 : x
  2. Step 2: Convert to fraction form
    351,596.84/527,398.56 = 85,359.69/x
  3. Step 3: Cross multiply
    351,596.84x = 527,398.56 × 85,359.69
  4. Step 4: Simplify right side
    351,596.84x = 45,018,577,588.05
  5. Step 5: Solve for x
    x = 45,018,577,588.05/351,596.84
  6. Step 6: Final answer
    x = 128,040.34

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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.