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Finding the Fourth Proportional to 388,822.80, 536,676.96 and 253,228.80

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Solution

The fourth proportional to 388,822.80, 536,676.96 and 253,228.80 is: 349,521.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,822.80 : 536,676.96 = 253,228.80 : x
  2. Step 2: Convert to fraction form
    388,822.80/536,676.96 = 253,228.80/x
  3. Step 3: Cross multiply
    388,822.80x = 536,676.96 × 253,228.80
  4. Step 4: Simplify right side
    388,822.80x = 135,902,062,568.45
  5. Step 5: Solve for x
    x = 135,902,062,568.45/388,822.80
  6. Step 6: Final answer
    x = 349,521.85

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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.