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Finding the Fourth Proportional to 311,125.55, 429,325.56 and 173,293.92

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Solution

The fourth proportional to 311,125.55, 429,325.56 and 173,293.92 is: 239,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,125.55 : 429,325.56 = 173,293.92 : x
  2. Step 2: Convert to fraction form
    311,125.55/429,325.56 = 173,293.92/x
  3. Step 3: Cross multiply
    311,125.55x = 429,325.56 × 173,293.92
  4. Step 4: Simplify right side
    311,125.55x = 74,399,509,248.60
  5. Step 5: Solve for x
    x = 74,399,509,248.60/311,125.55
  6. Step 6: Final answer
    x = 239,130.19

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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.