Home / 280,563.48-387,176.76-153,239.04

Finding the Fourth Proportional to 280,563.48, 387,176.76 and 153,239.04

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Solution

The fourth proportional to 280,563.48, 387,176.76 and 153,239.04 is: 211,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,563.48 : 387,176.76 = 153,239.04 : x
  2. Step 2: Convert to fraction form
    280,563.48/387,176.76 = 153,239.04/x
  3. Step 3: Cross multiply
    280,563.48x = 387,176.76 × 153,239.04
  4. Step 4: Simplify right side
    280,563.48x = 59,330,595,012.71
  5. Step 5: Solve for x
    x = 59,330,595,012.71/280,563.48
  6. Step 6: Final answer
    x = 211,469.42

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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.