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Finding the Fourth Proportional to 425,293.68, 586,221.16 and 287,429.48

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Solution

The fourth proportional to 425,293.68, 586,221.16 and 287,429.48 is: 396,190.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,293.68 : 586,221.16 = 287,429.48 : x
  2. Step 2: Convert to fraction form
    425,293.68/586,221.16 = 287,429.48/x
  3. Step 3: Cross multiply
    425,293.68x = 586,221.16 × 287,429.48
  4. Step 4: Simplify right side
    425,293.68x = 168,497,243,183.80
  5. Step 5: Solve for x
    x = 168,497,243,183.80/425,293.68
  6. Step 6: Final answer
    x = 396,190.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.