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Finding the Fourth Proportional to 247,970.20, 371,969.70 and 70,490.20

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Solution

The fourth proportional to 247,970.20, 371,969.70 and 70,490.20 is: 105,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,970.20 : 371,969.70 = 70,490.20 : x
  2. Step 2: Convert to fraction form
    247,970.20/371,969.70 = 70,490.20/x
  3. Step 3: Cross multiply
    247,970.20x = 371,969.70 × 70,490.20
  4. Step 4: Simplify right side
    247,970.20x = 26,220,218,546.94
  5. Step 5: Solve for x
    x = 26,220,218,546.94/247,970.20
  6. Step 6: Final answer
    x = 105,739.39

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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.