Home / 398,916.32-549,744.72-285,542.24

Finding the Fourth Proportional to 398,916.32, 549,744.72 and 285,542.24

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Solution

The fourth proportional to 398,916.32, 549,744.72 and 285,542.24 is: 393,504.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,916.32 : 549,744.72 = 285,542.24 : x
  2. Step 2: Convert to fraction form
    398,916.32/549,744.72 = 285,542.24/x
  3. Step 3: Cross multiply
    398,916.32x = 549,744.72 × 285,542.24
  4. Step 4: Simplify right side
    398,916.32x = 156,975,338,776.97
  5. Step 5: Solve for x
    x = 156,975,338,776.97/398,916.32
  6. Step 6: Final answer
    x = 393,504.43

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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.