Home / 280,694.24-387,353.49-153,367.10

Finding the Fourth Proportional to 280,694.24, 387,353.49 and 153,367.10

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Solution

The fourth proportional to 280,694.24, 387,353.49 and 153,367.10 is: 211,644.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,694.24 : 387,353.49 = 153,367.10 : x
  2. Step 2: Convert to fraction form
    280,694.24/387,353.49 = 153,367.10/x
  3. Step 3: Cross multiply
    280,694.24x = 387,353.49 × 153,367.10
  4. Step 4: Simplify right side
    280,694.24x = 59,407,281,436.18
  5. Step 5: Solve for x
    x = 59,407,281,436.18/280,694.24
  6. Step 6: Final answer
    x = 211,644.11

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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.