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Finding the Fourth Proportional to 486,891.76, 671,908.84 and 269,094.32

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Solution

The fourth proportional to 486,891.76, 671,908.84 and 269,094.32 is: 371,349.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,891.76 : 671,908.84 = 269,094.32 : x
  2. Step 2: Convert to fraction form
    486,891.76/671,908.84 = 269,094.32/x
  3. Step 3: Cross multiply
    486,891.76x = 671,908.84 × 269,094.32
  4. Step 4: Simplify right side
    486,891.76x = 180,806,852,401.79
  5. Step 5: Solve for x
    x = 180,806,852,401.79/486,891.76
  6. Step 6: Final answer
    x = 371,349.17

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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.