Home / 345,937.10-518,905.65-212,384.30

Finding the Fourth Proportional to 345,937.10, 518,905.65 and 212,384.30

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Solution

The fourth proportional to 345,937.10, 518,905.65 and 212,384.30 is: 318,576.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,937.10 : 518,905.65 = 212,384.30 : x
  2. Step 2: Convert to fraction form
    345,937.10/518,905.65 = 212,384.30/x
  3. Step 3: Cross multiply
    345,937.10x = 518,905.65 × 212,384.30
  4. Step 4: Simplify right side
    345,937.10x = 110,207,413,241.30
  5. Step 5: Solve for x
    x = 110,207,413,241.30/345,937.10
  6. Step 6: Final answer
    x = 318,576.45

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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.