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Finding the Fourth Proportional to 317,692.80, 476,846.40 and 270,998.40

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Solution

The fourth proportional to 317,692.80, 476,846.40 and 270,998.40 is: 406,759.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,692.80 : 476,846.40 = 270,998.40 : x
  2. Step 2: Convert to fraction form
    317,692.80/476,846.40 = 270,998.40/x
  3. Step 3: Cross multiply
    317,692.80x = 476,846.40 × 270,998.40
  4. Step 4: Simplify right side
    317,692.80x = 129,224,611,445.76
  5. Step 5: Solve for x
    x = 129,224,611,445.76/317,692.80
  6. Step 6: Final answer
    x = 406,759.65

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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.