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Finding the Fourth Proportional to 413,766.60, 620,649.90 and 133,312.20

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Solution

The fourth proportional to 413,766.60, 620,649.90 and 133,312.20 is: 199,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,766.60 : 620,649.90 = 133,312.20 : x
  2. Step 2: Convert to fraction form
    413,766.60/620,649.90 = 133,312.20/x
  3. Step 3: Cross multiply
    413,766.60x = 620,649.90 × 133,312.20
  4. Step 4: Simplify right side
    413,766.60x = 82,740,203,598.78
  5. Step 5: Solve for x
    x = 82,740,203,598.78/413,766.60
  6. Step 6: Final answer
    x = 199,968.30

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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.