Home / 311,919.57-430,565.64-242,872.53

Finding the Fourth Proportional to 311,919.57, 430,565.64 and 242,872.53

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Solution

The fourth proportional to 311,919.57, 430,565.64 and 242,872.53 is: 335,254.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,919.57 : 430,565.64 = 242,872.53 : x
  2. Step 2: Convert to fraction form
    311,919.57/430,565.64 = 242,872.53/x
  3. Step 3: Cross multiply
    311,919.57x = 430,565.64 × 242,872.53
  4. Step 4: Simplify right side
    311,919.57x = 104,572,566,317.87
  5. Step 5: Solve for x
    x = 104,572,566,317.87/311,919.57
  6. Step 6: Final answer
    x = 335,254.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.