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Finding the Fourth Proportional to 218,657.80, 301,638.90 and 147,040.84

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Solution

The fourth proportional to 218,657.80, 301,638.90 and 147,040.84 is: 202,843.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,657.80 : 301,638.90 = 147,040.84 : x
  2. Step 2: Convert to fraction form
    218,657.80/301,638.90 = 147,040.84/x
  3. Step 3: Cross multiply
    218,657.80x = 301,638.90 × 147,040.84
  4. Step 4: Simplify right side
    218,657.80x = 44,353,237,232.68
  5. Step 5: Solve for x
    x = 44,353,237,232.68/218,657.80
  6. Step 6: Final answer
    x = 202,843.15

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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.