Home / 280,561.22-387,176.53-153,236.81

Finding the Fourth Proportional to 280,561.22, 387,176.53 and 153,236.81

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Solution

The fourth proportional to 280,561.22, 387,176.53 and 153,236.81 is: 211,467.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,561.22 : 387,176.53 = 153,236.81 : x
  2. Step 2: Convert to fraction form
    280,561.22/387,176.53 = 153,236.81/x
  3. Step 3: Cross multiply
    280,561.22x = 387,176.53 × 153,236.81
  4. Step 4: Simplify right side
    280,561.22x = 59,329,697,667.22
  5. Step 5: Solve for x
    x = 59,329,697,667.22/280,561.22
  6. Step 6: Final answer
    x = 211,467.92

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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.