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Finding the Fourth Proportional to 309,885.84, 427,684.19 and 173,927.22

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Solution

The fourth proportional to 309,885.84, 427,684.19 and 173,927.22 is: 240,042.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,885.84 : 427,684.19 = 173,927.22 : x
  2. Step 2: Convert to fraction form
    309,885.84/427,684.19 = 173,927.22/x
  3. Step 3: Cross multiply
    309,885.84x = 427,684.19 × 173,927.22
  4. Step 4: Simplify right side
    309,885.84x = 74,385,921,335.02
  5. Step 5: Solve for x
    x = 74,385,921,335.02/309,885.84
  6. Step 6: Final answer
    x = 240,042.98

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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.