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Finding the Fourth Proportional to 527,261.80, 790,892.70 and 211,556.20

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Solution

The fourth proportional to 527,261.80, 790,892.70 and 211,556.20 is: 317,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,261.80 : 790,892.70 = 211,556.20 : x
  2. Step 2: Convert to fraction form
    527,261.80/790,892.70 = 211,556.20/x
  3. Step 3: Cross multiply
    527,261.80x = 790,892.70 × 211,556.20
  4. Step 4: Simplify right side
    527,261.80x = 167,318,254,219.74
  5. Step 5: Solve for x
    x = 167,318,254,219.74/527,261.80
  6. Step 6: Final answer
    x = 317,334.30

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Double scale
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Similar ratio
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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.