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Finding the Fourth Proportional to 247,220, 370,811.36 and 78,733.52

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Solution

The fourth proportional to 247,220, 370,811.36 and 78,733.52 is: 118,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,220 : 370,811.36 = 78,733.52 : x
  2. Step 2: Convert to fraction form
    247,220/370,811.36 = 78,733.52/x
  3. Step 3: Cross multiply
    247,220x = 370,811.36 × 78,733.52
  4. Step 4: Simplify right side
    247,220x = 29,195,283,628.79
  5. Step 5: Solve for x
    x = 29,195,283,628.79/247,220
  6. Step 6: Final answer
    x = 118,094.34

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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.