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Finding the Fourth Proportional to 388,227.30, 536,045.58 and 382,027.20

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Solution

The fourth proportional to 388,227.30, 536,045.58 and 382,027.20 is: 527,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,227.30 : 536,045.58 = 382,027.20 : x
  2. Step 2: Convert to fraction form
    388,227.30/536,045.58 = 382,027.20/x
  3. Step 3: Cross multiply
    388,227.30x = 536,045.58 × 382,027.20
  4. Step 4: Simplify right side
    388,227.30x = 204,783,991,999.78
  5. Step 5: Solve for x
    x = 204,783,991,999.78/388,227.30
  6. Step 6: Final answer
    x = 527,484.78

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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.