Home / 280,607.36-387,246.66-153,291.15

Finding the Fourth Proportional to 280,607.36, 387,246.66 and 153,291.15

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Solution

The fourth proportional to 280,607.36, 387,246.66 and 153,291.15 is: 211,546.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,607.36 : 387,246.66 = 153,291.15 : x
  2. Step 2: Convert to fraction form
    280,607.36/387,246.66 = 153,291.15/x
  3. Step 3: Cross multiply
    280,607.36x = 387,246.66 × 153,291.15
  4. Step 4: Simplify right side
    280,607.36x = 59,361,485,845.06
  5. Step 5: Solve for x
    x = 59,361,485,845.06/280,607.36
  6. Step 6: Final answer
    x = 211,546.43

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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.