Home / 345,981.60-518,875.20-109,396.80

Finding the Fourth Proportional to 345,981.60, 518,875.20 and 109,396.80

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Solution

The fourth proportional to 345,981.60, 518,875.20 and 109,396.80 is: 164,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,981.60 : 518,875.20 = 109,396.80 : x
  2. Step 2: Convert to fraction form
    345,981.60/518,875.20 = 109,396.80/x
  3. Step 3: Cross multiply
    345,981.60x = 518,875.20 × 109,396.80
  4. Step 4: Simplify right side
    345,981.60x = 56,763,286,479.36
  5. Step 5: Solve for x
    x = 56,763,286,479.36/345,981.60
  6. Step 6: Final answer
    x = 164,064.47

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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.