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Finding the Fourth Proportional to 311,572.58, 429,972.03 and 173,760.21

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Solution

The fourth proportional to 311,572.58, 429,972.03 and 173,760.21 is: 239,790.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,572.58 : 429,972.03 = 173,760.21 : x
  2. Step 2: Convert to fraction form
    311,572.58/429,972.03 = 173,760.21/x
  3. Step 3: Cross multiply
    311,572.58x = 429,972.03 × 173,760.21
  4. Step 4: Simplify right side
    311,572.58x = 74,712,030,226.93
  5. Step 5: Solve for x
    x = 74,712,030,226.93/311,572.58
  6. Step 6: Final answer
    x = 239,790.14

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1.5x scale

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.