Home / 218,665.40-328,127.70-143,999.60

Finding the Fourth Proportional to 218,665.40, 328,127.70 and 143,999.60

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Solution

The fourth proportional to 218,665.40, 328,127.70 and 143,999.60 is: 216,084.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,665.40 : 328,127.70 = 143,999.60 : x
  2. Step 2: Convert to fraction form
    218,665.40/328,127.70 = 143,999.60/x
  3. Step 3: Cross multiply
    218,665.40x = 328,127.70 × 143,999.60
  4. Step 4: Simplify right side
    218,665.40x = 47,250,257,548.92
  5. Step 5: Solve for x
    x = 47,250,257,548.92/218,665.40
  6. Step 6: Final answer
    x = 216,084.75

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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.