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Finding the Fourth Proportional to 218,064.70, 326,854.05 and 84,900.70

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Solution

The fourth proportional to 218,064.70, 326,854.05 and 84,900.70 is: 127,256.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,064.70 : 326,854.05 = 84,900.70 : x
  2. Step 2: Convert to fraction form
    218,064.70/326,854.05 = 84,900.70/x
  3. Step 3: Cross multiply
    218,064.70x = 326,854.05 × 84,900.70
  4. Step 4: Simplify right side
    218,064.70x = 27,750,137,642.84
  5. Step 5: Solve for x
    x = 27,750,137,642.84/218,064.70
  6. Step 6: Final answer
    x = 127,256.44

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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.