Home / 212,583.32-318,486.10-100,356.28

Finding the Fourth Proportional to 212,583.32, 318,486.10 and 100,356.28

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Solution

The fourth proportional to 212,583.32, 318,486.10 and 100,356.28 is: 150,350.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,583.32 : 318,486.10 = 100,356.28 : x
  2. Step 2: Convert to fraction form
    212,583.32/318,486.10 = 100,356.28/x
  3. Step 3: Cross multiply
    212,583.32x = 318,486.10 × 100,356.28
  4. Step 4: Simplify right side
    212,583.32x = 31,962,080,227.71
  5. Step 5: Solve for x
    x = 31,962,080,227.71/212,583.32
  6. Step 6: Final answer
    x = 150,350.84

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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.