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Finding the Fourth Proportional to 435,640.10, 653,492.55 and 155,120.90

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Solution

The fourth proportional to 435,640.10, 653,492.55 and 155,120.90 is: 232,692.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,640.10 : 653,492.55 = 155,120.90 : x
  2. Step 2: Convert to fraction form
    435,640.10/653,492.55 = 155,120.90/x
  3. Step 3: Cross multiply
    435,640.10x = 653,492.55 × 155,120.90
  4. Step 4: Simplify right side
    435,640.10x = 101,370,352,499.30
  5. Step 5: Solve for x
    x = 101,370,352,499.30/435,640.10
  6. Step 6: Final answer
    x = 232,692.89

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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.