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Finding the Fourth Proportional to 558,915.30, 771,300.84 and 313,866

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Solution

The fourth proportional to 558,915.30, 771,300.84 and 313,866 is: 433,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,915.30 : 771,300.84 = 313,866 : x
  2. Step 2: Convert to fraction form
    558,915.30/771,300.84 = 313,866/x
  3. Step 3: Cross multiply
    558,915.30x = 771,300.84 × 313,866
  4. Step 4: Simplify right side
    558,915.30x = 242,085,109,447.44
  5. Step 5: Solve for x
    x = 242,085,109,447.44/558,915.30
  6. Step 6: Final answer
    x = 433,133.80

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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.