Home / 280,467.66-387,043.83-153,142.35

Finding the Fourth Proportional to 280,467.66, 387,043.83 and 153,142.35

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Solution

The fourth proportional to 280,467.66, 387,043.83 and 153,142.35 is: 211,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,467.66 : 387,043.83 = 153,142.35 : x
  2. Step 2: Convert to fraction form
    280,467.66/387,043.83 = 153,142.35/x
  3. Step 3: Cross multiply
    280,467.66x = 387,043.83 × 153,142.35
  4. Step 4: Simplify right side
    280,467.66x = 59,272,801,679.20
  5. Step 5: Solve for x
    x = 59,272,801,679.20/280,467.66
  6. Step 6: Final answer
    x = 211,335.60

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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.