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Finding the Fourth Proportional to 270,692.20, 406,038.30 and 221,484.70

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Solution

The fourth proportional to 270,692.20, 406,038.30 and 221,484.70 is: 332,227.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,692.20 : 406,038.30 = 221,484.70 : x
  2. Step 2: Convert to fraction form
    270,692.20/406,038.30 = 221,484.70/x
  3. Step 3: Cross multiply
    270,692.20x = 406,038.30 × 221,484.70
  4. Step 4: Simplify right side
    270,692.20x = 89,931,271,064.01
  5. Step 5: Solve for x
    x = 89,931,271,064.01/270,692.20
  6. Step 6: Final answer
    x = 332,227.05

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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.