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Finding the Fourth Proportional to 279,507.19, 419,172.53 and 89,925.32

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Solution

The fourth proportional to 279,507.19, 419,172.53 and 89,925.32 is: 134,859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,507.19 : 419,172.53 = 89,925.32 : x
  2. Step 2: Convert to fraction form
    279,507.19/419,172.53 = 89,925.32/x
  3. Step 3: Cross multiply
    279,507.19x = 419,172.53 × 89,925.32
  4. Step 4: Simplify right side
    279,507.19x = 37,694,223,445.83
  5. Step 5: Solve for x
    x = 37,694,223,445.83/279,507.19
  6. Step 6: Final answer
    x = 134,859.59

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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.