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Finding the Fourth Proportional to 218,862.58, 328,300.71 and 69,104.26

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Solution

The fourth proportional to 218,862.58, 328,300.71 and 69,104.26 is: 103,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,862.58 : 328,300.71 = 69,104.26 : x
  2. Step 2: Convert to fraction form
    218,862.58/328,300.71 = 69,104.26/x
  3. Step 3: Cross multiply
    218,862.58x = 328,300.71 × 69,104.26
  4. Step 4: Simplify right side
    218,862.58x = 22,686,977,622.02
  5. Step 5: Solve for x
    x = 22,686,977,622.02/218,862.58
  6. Step 6: Final answer
    x = 103,658.55

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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.