Home / 212,442.05-318,977.15-141,804.78

Finding the Fourth Proportional to 212,442.05, 318,977.15 and 141,804.78

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Solution

The fourth proportional to 212,442.05, 318,977.15 and 141,804.78 is: 212,916.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,442.05 : 318,977.15 = 141,804.78 : x
  2. Step 2: Convert to fraction form
    212,442.05/318,977.15 = 141,804.78/x
  3. Step 3: Cross multiply
    212,442.05x = 318,977.15 × 141,804.78
  4. Step 4: Simplify right side
    212,442.05x = 45,232,483,871.75
  5. Step 5: Solve for x
    x = 45,232,483,871.75/212,442.05
  6. Step 6: Final answer
    x = 212,916.82

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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.