Home / 280,570.13-387,186.78-153,246.03

Finding the Fourth Proportional to 280,570.13, 387,186.78 and 153,246.03

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Solution

The fourth proportional to 280,570.13, 387,186.78 and 153,246.03 is: 211,479.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,570.13 : 387,186.78 = 153,246.03 : x
  2. Step 2: Convert to fraction form
    280,570.13/387,186.78 = 153,246.03/x
  3. Step 3: Cross multiply
    280,570.13x = 387,186.78 × 153,246.03
  4. Step 4: Simplify right side
    280,570.13x = 59,334,836,903.48
  5. Step 5: Solve for x
    x = 59,334,836,903.48/280,570.13
  6. Step 6: Final answer
    x = 211,479.53

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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.