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Finding the Fourth Proportional to 408,874.03, 613,381.11 and 138,973.62

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Solution

The fourth proportional to 408,874.03, 613,381.11 and 138,973.62 is: 208,484.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,874.03 : 613,381.11 = 138,973.62 : x
  2. Step 2: Convert to fraction form
    408,874.03/613,381.11 = 138,973.62/x
  3. Step 3: Cross multiply
    408,874.03x = 613,381.11 × 138,973.62
  4. Step 4: Simplify right side
    408,874.03x = 85,243,795,075.35
  5. Step 5: Solve for x
    x = 85,243,795,075.35/408,874.03
  6. Step 6: Final answer
    x = 208,484.25

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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.