Home / 212,439.56-318,617.01-136,312.92

Finding the Fourth Proportional to 212,439.56, 318,617.01 and 136,312.92

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Solution

The fourth proportional to 212,439.56, 318,617.01 and 136,312.92 is: 204,442.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,439.56 : 318,617.01 = 136,312.92 : x
  2. Step 2: Convert to fraction form
    212,439.56/318,617.01 = 136,312.92/x
  3. Step 3: Cross multiply
    212,439.56x = 318,617.01 × 136,312.92
  4. Step 4: Simplify right side
    212,439.56x = 43,431,614,994.77
  5. Step 5: Solve for x
    x = 43,431,614,994.77/212,439.56
  6. Step 6: Final answer
    x = 204,442.22

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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.