Home / 280,468.16-387,044.52-153,142.85

Finding the Fourth Proportional to 280,468.16, 387,044.52 and 153,142.85

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Solution

The fourth proportional to 280,468.16, 387,044.52 and 153,142.85 is: 211,336.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,468.16 : 387,044.52 = 153,142.85 : x
  2. Step 2: Convert to fraction form
    280,468.16/387,044.52 = 153,142.85/x
  3. Step 3: Cross multiply
    280,468.16x = 387,044.52 × 153,142.85
  4. Step 4: Simplify right side
    280,468.16x = 59,273,100,869.68
  5. Step 5: Solve for x
    x = 59,273,100,869.68/280,468.16
  6. Step 6: Final answer
    x = 211,336.29

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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.