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Finding the Fourth Proportional to 547,981.76, 756,212.04 and 306,264.20

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Solution

The fourth proportional to 547,981.76, 756,212.04 and 306,264.20 is: 422,643.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,981.76 : 756,212.04 = 306,264.20 : x
  2. Step 2: Convert to fraction form
    547,981.76/756,212.04 = 306,264.20/x
  3. Step 3: Cross multiply
    547,981.76x = 756,212.04 × 306,264.20
  4. Step 4: Simplify right side
    547,981.76x = 231,600,675,460.97
  5. Step 5: Solve for x
    x = 231,600,675,460.97/547,981.76
  6. Step 6: Final answer
    x = 422,643.04

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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.