Home / 401,223.20-553,436.24-258,169.12

Finding the Fourth Proportional to 401,223.20, 553,436.24 and 258,169.12

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Solution

The fourth proportional to 401,223.20, 553,436.24 and 258,169.12 is: 356,111.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,223.20 : 553,436.24 = 258,169.12 : x
  2. Step 2: Convert to fraction form
    401,223.20/553,436.24 = 258,169.12/x
  3. Step 3: Cross multiply
    401,223.20x = 553,436.24 × 258,169.12
  4. Step 4: Simplify right side
    401,223.20x = 142,880,147,056.91
  5. Step 5: Solve for x
    x = 142,880,147,056.91/401,223.20
  6. Step 6: Final answer
    x = 356,111.38

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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.