Home / 345,904.60-518,856.90-109,271.20

Finding the Fourth Proportional to 345,904.60, 518,856.90 and 109,271.20

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Solution

The fourth proportional to 345,904.60, 518,856.90 and 109,271.20 is: 163,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,904.60 : 518,856.90 = 109,271.20 : x
  2. Step 2: Convert to fraction form
    345,904.60/518,856.90 = 109,271.20/x
  3. Step 3: Cross multiply
    345,904.60x = 518,856.90 × 109,271.20
  4. Step 4: Simplify right side
    345,904.60x = 56,696,116,091.28
  5. Step 5: Solve for x
    x = 56,696,116,091.28/345,904.60
  6. Step 6: Final answer
    x = 163,906.80

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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.