Home / 218,763.72-328,014.36-85,485.18

Finding the Fourth Proportional to 218,763.72, 328,014.36 and 85,485.18

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Solution

The fourth proportional to 218,763.72, 328,014.36 and 85,485.18 is: 128,176.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,763.72 : 328,014.36 = 85,485.18 : x
  2. Step 2: Convert to fraction form
    218,763.72/328,014.36 = 85,485.18/x
  3. Step 3: Cross multiply
    218,763.72x = 328,014.36 × 85,485.18
  4. Step 4: Simplify right side
    218,763.72x = 28,040,366,607.18
  5. Step 5: Solve for x
    x = 28,040,366,607.18/218,763.72
  6. Step 6: Final answer
    x = 128,176.49

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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.