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Finding the Fourth Proportional to 374,409.81, 561,559.64 and 121,713.30

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Solution

The fourth proportional to 374,409.81, 561,559.64 and 121,713.30 is: 182,552.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,409.81 : 561,559.64 = 121,713.30 : x
  2. Step 2: Convert to fraction form
    374,409.81/561,559.64 = 121,713.30/x
  3. Step 3: Cross multiply
    374,409.81x = 561,559.64 × 121,713.30
  4. Step 4: Simplify right side
    374,409.81x = 68,349,276,322.65
  5. Step 5: Solve for x
    x = 68,349,276,322.65/374,409.81
  6. Step 6: Final answer
    x = 182,552.04

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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.