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Finding the Fourth Proportional to 384,841.62, 531,082.26 and 215,075.76

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Solution

The fourth proportional to 384,841.62, 531,082.26 and 215,075.76 is: 296,805.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,841.62 : 531,082.26 = 215,075.76 : x
  2. Step 2: Convert to fraction form
    384,841.62/531,082.26 = 215,075.76/x
  3. Step 3: Cross multiply
    384,841.62x = 531,082.26 × 215,075.76
  4. Step 4: Simplify right side
    384,841.62x = 114,222,920,692.02
  5. Step 5: Solve for x
    x = 114,222,920,692.02/384,841.62
  6. Step 6: Final answer
    x = 296,805.01

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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.