Home / 280,914.42-387,659.25-153,588.66

Finding the Fourth Proportional to 280,914.42, 387,659.25 and 153,588.66

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Solution

The fourth proportional to 280,914.42, 387,659.25 and 153,588.66 is: 211,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,914.42 : 387,659.25 = 153,588.66 : x
  2. Step 2: Convert to fraction form
    280,914.42/387,659.25 = 153,588.66/x
  3. Step 3: Cross multiply
    280,914.42x = 387,659.25 × 153,588.66
  4. Step 4: Simplify right side
    280,914.42x = 59,540,064,744.11
  5. Step 5: Solve for x
    x = 59,540,064,744.11/280,914.42
  6. Step 6: Final answer
    x = 211,950.90

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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.