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Finding the Fourth Proportional to 216,015.40, 323,925.90 and 82,851.40

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Solution

The fourth proportional to 216,015.40, 323,925.90 and 82,851.40 is: 124,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,015.40 : 323,925.90 = 82,851.40 : x
  2. Step 2: Convert to fraction form
    216,015.40/323,925.90 = 82,851.40/x
  3. Step 3: Cross multiply
    216,015.40x = 323,925.90 × 82,851.40
  4. Step 4: Simplify right side
    216,015.40x = 26,837,714,311.26
  5. Step 5: Solve for x
    x = 26,837,714,311.26/216,015.40
  6. Step 6: Final answer
    x = 124,239.82

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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.