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Finding the Fourth Proportional to 374,643.70, 561,965.55 and 108,412.90

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Solution

The fourth proportional to 374,643.70, 561,965.55 and 108,412.90 is: 162,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,643.70 : 561,965.55 = 108,412.90 : x
  2. Step 2: Convert to fraction form
    374,643.70/561,965.55 = 108,412.90/x
  3. Step 3: Cross multiply
    374,643.70x = 561,965.55 × 108,412.90
  4. Step 4: Simplify right side
    374,643.70x = 60,924,314,975.60
  5. Step 5: Solve for x
    x = 60,924,314,975.60/374,643.70
  6. Step 6: Final answer
    x = 162,619.35

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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.