Home / 258,669.45-356,975.52-145,492.20

Finding the Fourth Proportional to 258,669.45, 356,975.52 and 145,492.20

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Solution

The fourth proportional to 258,669.45, 356,975.52 and 145,492.20 is: 200,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,669.45 : 356,975.52 = 145,492.20 : x
  2. Step 2: Convert to fraction form
    258,669.45/356,975.52 = 145,492.20/x
  3. Step 3: Cross multiply
    258,669.45x = 356,975.52 × 145,492.20
  4. Step 4: Simplify right side
    258,669.45x = 51,937,153,750.94
  5. Step 5: Solve for x
    x = 51,937,153,750.94/258,669.45
  6. Step 6: Final answer
    x = 200,785.81

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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.