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Finding the Fourth Proportional to 307,084.86, 423,790.11 and 171,118.89

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Solution

The fourth proportional to 307,084.86, 423,790.11 and 171,118.89 is: 236,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,084.86 : 423,790.11 = 171,118.89 : x
  2. Step 2: Convert to fraction form
    307,084.86/423,790.11 = 171,118.89/x
  3. Step 3: Cross multiply
    307,084.86x = 423,790.11 × 171,118.89
  4. Step 4: Simplify right side
    307,084.86x = 72,518,493,216.18
  5. Step 5: Solve for x
    x = 72,518,493,216.18/307,084.86
  6. Step 6: Final answer
    x = 236,151.31

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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.