Home / 280,904.34-387,651.78-153,579.66

Finding the Fourth Proportional to 280,904.34, 387,651.78 and 153,579.66

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Solution

The fourth proportional to 280,904.34, 387,651.78 and 153,579.66 is: 211,942.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,904.34 : 387,651.78 = 153,579.66 : x
  2. Step 2: Convert to fraction form
    280,904.34/387,651.78 = 153,579.66/x
  3. Step 3: Cross multiply
    280,904.34x = 387,651.78 × 153,579.66
  4. Step 4: Simplify right side
    280,904.34x = 59,535,428,570.79
  5. Step 5: Solve for x
    x = 59,535,428,570.79/280,904.34
  6. Step 6: Final answer
    x = 211,942.00

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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.