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Finding the Fourth Proportional to 216,815.64, 325,307.29 and 83,658.93

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Solution

The fourth proportional to 216,815.64, 325,307.29 and 83,658.93 is: 125,520.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,815.64 : 325,307.29 = 83,658.93 : x
  2. Step 2: Convert to fraction form
    216,815.64/325,307.29 = 83,658.93/x
  3. Step 3: Cross multiply
    216,815.64x = 325,307.29 × 83,658.93
  4. Step 4: Simplify right side
    216,815.64x = 27,214,858,530.41
  5. Step 5: Solve for x
    x = 27,214,858,530.41/216,815.64
  6. Step 6: Final answer
    x = 125,520.74

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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.