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Finding the Fourth Proportional to 351,674.26, 527,511.29 and 85,432.93

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Solution

The fourth proportional to 351,674.26, 527,511.29 and 85,432.93 is: 128,149.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,674.26 : 527,511.29 = 85,432.93 : x
  2. Step 2: Convert to fraction form
    351,674.26/527,511.29 = 85,432.93/x
  3. Step 3: Cross multiply
    351,674.26x = 527,511.29 × 85,432.93
  4. Step 4: Simplify right side
    351,674.26x = 45,066,833,366.84
  5. Step 5: Solve for x
    x = 45,066,833,366.84/351,674.26
  6. Step 6: Final answer
    x = 128,149.37

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1.5x scale

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.