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Finding the Fourth Proportional to 403,137.80, 604,706.70 and 136,968.20

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Solution

The fourth proportional to 403,137.80, 604,706.70 and 136,968.20 is: 205,452.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,137.80 : 604,706.70 = 136,968.20 : x
  2. Step 2: Convert to fraction form
    403,137.80/604,706.70 = 136,968.20/x
  3. Step 3: Cross multiply
    403,137.80x = 604,706.70 × 136,968.20
  4. Step 4: Simplify right side
    403,137.80x = 82,825,588,226.94
  5. Step 5: Solve for x
    x = 82,825,588,226.94/403,137.80
  6. Step 6: Final answer
    x = 205,452.30

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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.