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Finding the Fourth Proportional to 291,545.60, 437,512.80 and 133,692.80

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Solution

The fourth proportional to 291,545.60, 437,512.80 and 133,692.80 is: 200,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,545.60 : 437,512.80 = 133,692.80 : x
  2. Step 2: Convert to fraction form
    291,545.60/437,512.80 = 133,692.80/x
  3. Step 3: Cross multiply
    291,545.60x = 437,512.80 × 133,692.80
  4. Step 4: Simplify right side
    291,545.60x = 58,492,311,267.84
  5. Step 5: Solve for x
    x = 58,492,311,267.84/291,545.60
  6. Step 6: Final answer
    x = 200,628.35

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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.