Home / 218,938.20-328,148.10-163,469.40

Finding the Fourth Proportional to 218,938.20, 328,148.10 and 163,469.40

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Solution

The fourth proportional to 218,938.20, 328,148.10 and 163,469.40 is: 245,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,938.20 : 328,148.10 = 163,469.40 : x
  2. Step 2: Convert to fraction form
    218,938.20/328,148.10 = 163,469.40/x
  3. Step 3: Cross multiply
    218,938.20x = 328,148.10 × 163,469.40
  4. Step 4: Simplify right side
    218,938.20x = 53,642,173,018.14
  5. Step 5: Solve for x
    x = 53,642,173,018.14/218,938.20
  6. Step 6: Final answer
    x = 245,010.57

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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.