Home / 280,709.61-387,789.06-242,918.25

Finding the Fourth Proportional to 280,709.61, 387,789.06 and 242,918.25

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Solution

The fourth proportional to 280,709.61, 387,789.06 and 242,918.25 is: 335,581.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,709.61 : 387,789.06 = 242,918.25 : x
  2. Step 2: Convert to fraction form
    280,709.61/387,789.06 = 242,918.25/x
  3. Step 3: Cross multiply
    280,709.61x = 387,789.06 × 242,918.25
  4. Step 4: Simplify right side
    280,709.61x = 94,201,039,824.35
  5. Step 5: Solve for x
    x = 94,201,039,824.35/280,709.61
  6. Step 6: Final answer
    x = 335,581.81

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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.