Home / 280,541.40-387,146.62-153,216.96

Finding the Fourth Proportional to 280,541.40, 387,146.62 and 153,216.96

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Solution

The fourth proportional to 280,541.40, 387,146.62 and 153,216.96 is: 211,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,541.40 : 387,146.62 = 153,216.96 : x
  2. Step 2: Convert to fraction form
    280,541.40/387,146.62 = 153,216.96/x
  3. Step 3: Cross multiply
    280,541.40x = 387,146.62 × 153,216.96
  4. Step 4: Simplify right side
    280,541.40x = 59,317,428,190.68
  5. Step 5: Solve for x
    x = 59,317,428,190.68/280,541.40
  6. Step 6: Final answer
    x = 211,439.13

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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.