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Finding the Fourth Proportional to 351,653.65, 527,480.49 and 85,412.37

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Solution

The fourth proportional to 351,653.65, 527,480.49 and 85,412.37 is: 128,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,653.65 : 527,480.49 = 85,412.37 : x
  2. Step 2: Convert to fraction form
    351,653.65/527,480.49 = 85,412.37/x
  3. Step 3: Cross multiply
    351,653.65x = 527,480.49 × 85,412.37
  4. Step 4: Simplify right side
    351,653.65x = 45,053,358,779.66
  5. Step 5: Solve for x
    x = 45,053,358,779.66/351,653.65
  6. Step 6: Final answer
    x = 128,118.56

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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.