Home / 280,520.57-387,116.34-153,196.13

Finding the Fourth Proportional to 280,520.57, 387,116.34 and 153,196.13

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Solution

The fourth proportional to 280,520.57, 387,116.34 and 153,196.13 is: 211,409.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,520.57 : 387,116.34 = 153,196.13 : x
  2. Step 2: Convert to fraction form
    280,520.57/387,116.34 = 153,196.13/x
  3. Step 3: Cross multiply
    280,520.57x = 387,116.34 × 153,196.13
  4. Step 4: Simplify right side
    280,520.57x = 59,304,725,147.76
  5. Step 5: Solve for x
    x = 59,304,725,147.76/280,520.57
  6. Step 6: Final answer
    x = 211,409.54

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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.