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Finding the Fourth Proportional to 413,486.72, 620,153.19 and 129,184.25

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Solution

The fourth proportional to 413,486.72, 620,153.19 and 129,184.25 is: 193,752.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,486.72 : 620,153.19 = 129,184.25 : x
  2. Step 2: Convert to fraction form
    413,486.72/620,153.19 = 129,184.25/x
  3. Step 3: Cross multiply
    413,486.72x = 620,153.19 × 129,184.25
  4. Step 4: Simplify right side
    413,486.72x = 80,114,021,634.49
  5. Step 5: Solve for x
    x = 80,114,021,634.49/413,486.72
  6. Step 6: Final answer
    x = 193,752.35

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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.