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Finding the Fourth Proportional to 382,051.12, 527,220.12 and 212,280.88

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Solution

The fourth proportional to 382,051.12, 527,220.12 and 212,280.88 is: 292,941.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,051.12 : 527,220.12 = 212,280.88 : x
  2. Step 2: Convert to fraction form
    382,051.12/527,220.12 = 212,280.88/x
  3. Step 3: Cross multiply
    382,051.12x = 527,220.12 × 212,280.88
  4. Step 4: Simplify right side
    382,051.12x = 111,918,751,027.31
  5. Step 5: Solve for x
    x = 111,918,751,027.31/382,051.12
  6. Step 6: Final answer
    x = 292,941.82

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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.