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Finding the Fourth Proportional to 306,989.83, 423,677.15 and 171,045.91

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Solution

The fourth proportional to 306,989.83, 423,677.15 and 171,045.91 is: 236,060.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,989.83 : 423,677.15 = 171,045.91 : x
  2. Step 2: Convert to fraction form
    306,989.83/423,677.15 = 171,045.91/x
  3. Step 3: Cross multiply
    306,989.83x = 423,677.15 × 171,045.91
  4. Step 4: Simplify right side
    306,989.83x = 72,468,243,983.75
  5. Step 5: Solve for x
    x = 72,468,243,983.75/306,989.83
  6. Step 6: Final answer
    x = 236,060.73

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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.