Home / 280,490.20-387,090.98-171,560.39

Finding the Fourth Proportional to 280,490.20, 387,090.98 and 171,560.39

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Solution

The fourth proportional to 280,490.20, 387,090.98 and 171,560.39 is: 236,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,490.20 : 387,090.98 = 171,560.39 : x
  2. Step 2: Convert to fraction form
    280,490.20/387,090.98 = 171,560.39/x
  3. Step 3: Cross multiply
    280,490.20x = 387,090.98 × 171,560.39
  4. Step 4: Simplify right side
    280,490.20x = 66,409,479,494.28
  5. Step 5: Solve for x
    x = 66,409,479,494.28/280,490.20
  6. Step 6: Final answer
    x = 236,762.21

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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.