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Finding the Fourth Proportional to 308,262.92, 425,215.86 and 212,600.84

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Solution

The fourth proportional to 308,262.92, 425,215.86 and 212,600.84 is: 293,260.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,262.92 : 425,215.86 = 212,600.84 : x
  2. Step 2: Convert to fraction form
    308,262.92/425,215.86 = 212,600.84/x
  3. Step 3: Cross multiply
    308,262.92x = 425,215.86 × 212,600.84
  4. Step 4: Simplify right side
    308,262.92x = 90,401,249,017.32
  5. Step 5: Solve for x
    x = 90,401,249,017.32/308,262.92
  6. Step 6: Final answer
    x = 293,260.21

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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.