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Finding the Fourth Proportional to 348,991.80, 523,155 and 112,168.08

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Solution

The fourth proportional to 348,991.80, 523,155 and 112,168.08 is: 168,145.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,991.80 : 523,155 = 112,168.08 : x
  2. Step 2: Convert to fraction form
    348,991.80/523,155 = 112,168.08/x
  3. Step 3: Cross multiply
    348,991.80x = 523,155 × 112,168.08
  4. Step 4: Simplify right side
    348,991.80x = 58,681,291,892.40
  5. Step 5: Solve for x
    x = 58,681,291,892.40/348,991.80
  6. Step 6: Final answer
    x = 168,145.19

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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.