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Finding the Fourth Proportional to 253,000.48, 379,487.04 and 128,338.24

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Solution

The fourth proportional to 253,000.48, 379,487.04 and 128,338.24 is: 192,500.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,000.48 : 379,487.04 = 128,338.24 : x
  2. Step 2: Convert to fraction form
    253,000.48/379,487.04 = 128,338.24/x
  3. Step 3: Cross multiply
    253,000.48x = 379,487.04 × 128,338.24
  4. Step 4: Simplify right side
    253,000.48x = 48,702,698,816.41
  5. Step 5: Solve for x
    x = 48,702,698,816.41/253,000.48
  6. Step 6: Final answer
    x = 192,500.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.