Home / 411,932.40-617,437.80-212,175.60

Finding the Fourth Proportional to 411,932.40, 617,437.80 and 212,175.60

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Solution

The fourth proportional to 411,932.40, 617,437.80 and 212,175.60 is: 318,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,932.40 : 617,437.80 = 212,175.60 : x
  2. Step 2: Convert to fraction form
    411,932.40/617,437.80 = 212,175.60/x
  3. Step 3: Cross multiply
    411,932.40x = 617,437.80 × 212,175.60
  4. Step 4: Simplify right side
    411,932.40x = 131,005,235,677.68
  5. Step 5: Solve for x
    x = 131,005,235,677.68/411,932.40
  6. Step 6: Final answer
    x = 318,026.05

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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.