Home / 218,816.64-328,225.04-69,072.08

Finding the Fourth Proportional to 218,816.64, 328,225.04 and 69,072.08

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Solution

The fourth proportional to 218,816.64, 328,225.04 and 69,072.08 is: 103,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,816.64 : 328,225.04 = 69,072.08 : x
  2. Step 2: Convert to fraction form
    218,816.64/328,225.04 = 69,072.08/x
  3. Step 3: Cross multiply
    218,816.64x = 328,225.04 × 69,072.08
  4. Step 4: Simplify right side
    218,816.64x = 22,671,184,234.40
  5. Step 5: Solve for x
    x = 22,671,184,234.40/218,816.64
  6. Step 6: Final answer
    x = 103,608.14

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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.