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Finding the Fourth Proportional to 346,078.60, 519,117.90 and 212,525.80

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Solution

The fourth proportional to 346,078.60, 519,117.90 and 212,525.80 is: 318,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,078.60 : 519,117.90 = 212,525.80 : x
  2. Step 2: Convert to fraction form
    346,078.60/519,117.90 = 212,525.80/x
  3. Step 3: Cross multiply
    346,078.60x = 519,117.90 × 212,525.80
  4. Step 4: Simplify right side
    346,078.60x = 110,325,946,991.82
  5. Step 5: Solve for x
    x = 110,325,946,991.82/346,078.60
  6. Step 6: Final answer
    x = 318,788.70

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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.