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Finding the Fourth Proportional to 145,179.39, 217,684.31 and 56,329.12

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Solution

The fourth proportional to 145,179.39, 217,684.31 and 56,329.12 is: 84,460.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,179.39 : 217,684.31 = 56,329.12 : x
  2. Step 2: Convert to fraction form
    145,179.39/217,684.31 = 56,329.12/x
  3. Step 3: Cross multiply
    145,179.39x = 217,684.31 × 56,329.12
  4. Step 4: Simplify right side
    145,179.39x = 12,261,965,927.42
  5. Step 5: Solve for x
    x = 12,261,965,927.42/145,179.39
  6. Step 6: Final answer
    x = 84,460.79

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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.