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Finding the Fourth Proportional to 346,011.95, 518,768.79 and 212,616.59

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Solution

The fourth proportional to 346,011.95, 518,768.79 and 212,616.59 is: 318,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,011.95 : 518,768.79 = 212,616.59 : x
  2. Step 2: Convert to fraction form
    346,011.95/518,768.79 = 212,616.59/x
  3. Step 3: Cross multiply
    346,011.95x = 518,768.79 × 212,616.59
  4. Step 4: Simplify right side
    346,011.95x = 110,298,852,425.15
  5. Step 5: Solve for x
    x = 110,298,852,425.15/346,011.95
  6. Step 6: Final answer
    x = 318,771.80

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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.