Home / 280,423.26-387,028.53-178,342.29

Finding the Fourth Proportional to 280,423.26, 387,028.53 and 178,342.29

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Solution

The fourth proportional to 280,423.26, 387,028.53 and 178,342.29 is: 246,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,423.26 : 387,028.53 = 178,342.29 : x
  2. Step 2: Convert to fraction form
    280,423.26/387,028.53 = 178,342.29/x
  3. Step 3: Cross multiply
    280,423.26x = 387,028.53 × 178,342.29
  4. Step 4: Simplify right side
    280,423.26x = 69,023,554,335.53
  5. Step 5: Solve for x
    x = 69,023,554,335.53/280,423.26
  6. Step 6: Final answer
    x = 246,140.62

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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.