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Finding the Fourth Proportional to 247,220.70, 370,809.45 and 81,008.70

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Solution

The fourth proportional to 247,220.70, 370,809.45 and 81,008.70 is: 121,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,220.70 : 370,809.45 = 81,008.70 : x
  2. Step 2: Convert to fraction form
    247,220.70/370,809.45 = 81,008.70/x
  3. Step 3: Cross multiply
    247,220.70x = 370,809.45 × 81,008.70
  4. Step 4: Simplify right side
    247,220.70x = 30,038,791,492.22
  5. Step 5: Solve for x
    x = 30,038,791,492.22/247,220.70
  6. Step 6: Final answer
    x = 121,505.97

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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.