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Finding the Fourth Proportional to 346,309.32, 519,478.80 and 135,992.76

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Solution

The fourth proportional to 346,309.32, 519,478.80 and 135,992.76 is: 203,994.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,309.32 : 519,478.80 = 135,992.76 : x
  2. Step 2: Convert to fraction form
    346,309.32/519,478.80 = 135,992.76/x
  3. Step 3: Cross multiply
    346,309.32x = 519,478.80 × 135,992.76
  4. Step 4: Simplify right side
    346,309.32x = 70,645,355,773.49
  5. Step 5: Solve for x
    x = 70,645,355,773.49/346,309.32
  6. Step 6: Final answer
    x = 203,994.96

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1.5x scale

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.