Home / 345,397.50-518,072.49-212,298.30

Finding the Fourth Proportional to 345,397.50, 518,072.49 and 212,298.30

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Solution

The fourth proportional to 345,397.50, 518,072.49 and 212,298.30 is: 318,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,397.50 : 518,072.49 = 212,298.30 : x
  2. Step 2: Convert to fraction form
    345,397.50/518,072.49 = 212,298.30/x
  3. Step 3: Cross multiply
    345,397.50x = 518,072.49 × 212,298.30
  4. Step 4: Simplify right side
    345,397.50x = 109,985,908,903.77
  5. Step 5: Solve for x
    x = 109,985,908,903.77/345,397.50
  6. Step 6: Final answer
    x = 318,432.85

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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.