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Finding the Fourth Proportional to 247,638.60, 371,129.85 and 219,426.30

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Solution

The fourth proportional to 247,638.60, 371,129.85 and 219,426.30 is: 328,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,638.60 : 371,129.85 = 219,426.30 : x
  2. Step 2: Convert to fraction form
    247,638.60/371,129.85 = 219,426.30/x
  3. Step 3: Cross multiply
    247,638.60x = 371,129.85 × 219,426.30
  4. Step 4: Simplify right side
    247,638.60x = 81,435,649,805.06
  5. Step 5: Solve for x
    x = 81,435,649,805.06/247,638.60
  6. Step 6: Final answer
    x = 328,848.77

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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.