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Finding the Fourth Proportional to 218,971.64, 328,457.46 and 52,759.64

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Solution

The fourth proportional to 218,971.64, 328,457.46 and 52,759.64 is: 79,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,971.64 : 328,457.46 = 52,759.64 : x
  2. Step 2: Convert to fraction form
    218,971.64/328,457.46 = 52,759.64/x
  3. Step 3: Cross multiply
    218,971.64x = 328,457.46 × 52,759.64
  4. Step 4: Simplify right side
    218,971.64x = 17,329,297,344.91
  5. Step 5: Solve for x
    x = 17,329,297,344.91/218,971.64
  6. Step 6: Final answer
    x = 79,139.46

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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.