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Finding the Fourth Proportional to 280,564.92, 386,364.12 and 243,754.12

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Solution

The fourth proportional to 280,564.92, 386,364.12 and 243,754.12 is: 335,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,564.92 : 386,364.12 = 243,754.12 : x
  2. Step 2: Convert to fraction form
    280,564.92/386,364.12 = 243,754.12/x
  3. Step 3: Cross multiply
    280,564.92x = 386,364.12 × 243,754.12
  4. Step 4: Simplify right side
    280,564.92x = 94,177,843,465.75
  5. Step 5: Solve for x
    x = 94,177,843,465.75/280,564.92
  6. Step 6: Final answer
    x = 335,672.20

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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.